what do ya know?? I hunkered down in the u-pull-it and scavenged bolts from all sorts of tranny housings. I returned with two different lengths:
65mm and 70 mm. So I cleaned and brushed and sanded them. Ready for install. I now have the top tranny bolts and the underneath block fastners. Thanks to all who brainstormed. Who'da thunked it?? haha.
The junkman gave me the bolts gratis. What a day.