AH, gotcha... Bummer!!! But as I said, if you're still "working" on this idea then I'd love to pitch in help any way I can.
Plus if you need any parts numbers for 4wd stuff to convert your 2wd Engine for 4wd use just give a shout cause I've got it all sorted out (and a great connection with a JDM parts suplier actually in Japan who are indispensable to us N.American Toyo Diesel guys) and I'm always happy to help out fellow swappers/DIY'rs cause let's face it, if we don't help each other... who WILL right???
Where in OR are you if you don't mind my asking??? I see you mention you've got a 100-series Adventure rig... any chance you're an Expo Portal Member??? If not check out the site (Expeditionportal.com ...I'm 4Rescue over there too) cause I'd be willing to bet you'd like the focus of the boards/site and it's a GREAT place with a lot of good connections/fellow 4wd Adventrurers and a large contingency from the PNW to boot, and some really neat builds (including a 60-series body onto an 80-series chassis with a built to the hilt Super-charged Nissan TDv-SD33T I think- out of an Aussie Patrol!!!!!! SO beyond Cool)
I also wasn't trying to call into doubt your Toy Diesels either mate, just trying to add my.02 and maybe quell some of the "I've read that" criticism that I was reading from others about this engine. I love the 100-series as well (I love all Cruisers except the new 200-series "thing"), but again, once you've experienced the miracle of the Diesel engine/over-built 4wd combo, the mileage/power delivery of our US Spec. Toyotas just makes you depressed... The 100 is a GREAT rig, and the UZJ V8 certainly has the Diesel beat in the high-speed highway cruising game in terms of passing power, but sadly I've driven a Turbo'd 105-series with a manual trans... yeah, it was a really neat truck and just depresses me even more when I look at what were "offered" (read; forced to accept/not allowed to order in because of our government's bureaucratic entities trying to strong arm companies into PAYING through the nose to "certify" vehicles here... sorry, but if a Smart Car can pass ANY form of crash regulations, so can a 70-series Cruiser) as if we "don't need" Diesels and Manual transmissions aye.
As I said, I got to experience what I consider to be "ideal" trucks over in OZ (I lived/worked on a Cattle Station in Central QLD for over 5 years) from my own 1H powered 75-series Ute Chassis with a Low-Pressure turbo-system on it to an FJ45 P/U, several 70-series Troupies with the same Turbo set-up as my Ute, an HDJ80-series and one of my favorites next to the 70's, a Manual trans. 105 Series with another LP Turbo set-up (those 1H's won't make the power of the new D4d V8 TD, but they'll make more then enough and run forever if you don't put to "extreme" a turbo system on them as the pistons don't like the added stress/compression/hot-gasses being blasted onto the piston head face and can actually melt holes in the piston head surface, but the LP system really did retain ALL the reliability and made more then enough power to haul my Ute and the Troupies over hill and dale all day long, loaded to the gills (I'd routinely fill the 'Aussie Ute Bead" heaped over the top of the truck with fire-wood I'd go out and cut 1-2x a day for the kitchen fires and it never had a single issue fording creeks up to the window sills or cruising at 100kph across the center of the country on overland trips when the ambient temps were well over 125F and DRY HOT so I'm pretty dam comfortable with putting a 1KZ into my truck being that my biggest issue will be steep grades, not extreme temps (where the 1KZ's seem to need a bit of help to "help" the stock cooling systems) and a LOT of the issues with a 1KZ-TE comes down to the emissions programming in the ECU retarding the ignition so much that it increases carbon emissions intentionally to reduce NOx emissions and can be pretty easily modified using the "potentiometer/variable resistance control mods" that are all over the Aussie Surf Forums I spend a lot of time reading aye.
It also sounds like you've got some knowledge of Russia, which I'd LOVE to pick your brain over cause despite our current political BS (politicians ruin the world for those of us who just want to see it don't they... so bloody sad) I still want to do a trip over to E.Europe and into Russia through to China someday... I've been fascinated with Russia for quite some time after coming home from Australia cause it's got SO much space to explore and such amazing history/country to go experience too aye. That's one of my top "bucket list" items, that trip through Russia to China. At this point it's a dream, but sometimes dreams can be turned into reality with enough hard work and education aye. I think my First trip with the Diesel is gonna be a PNW shake-down run then I'll hit the Dawson/Dempster up to Alaska with the wife to finally get to do that drive on my own terms in my own rig and see my family/get to go play.
Sorry for my gibber jabber mate, I could talk Diesel Toyotas and exploration/adventrue for ever and ever...
Cheers
Dave