They called the dealer in MN. and not sure if the price was out of reach or if the part was obsolete.
Either way, I figured that a message here might connect a parts pile with a working machine.
the operator was told I had a Cat just like this (model130) one, so he called with high hopes. when I told him I had a thiokol and about the only thing similar was most likely the paint color (red) we had a good laugh and then began discussing the merits of a Johndeere motor he installed in his 130..... Sounded like a good guy.