I know that the truck bellhousings fit also.
Any 65-79 truck 3 or 4..... speed manual trans with an FE family motor.
Problem is that all 3 junkyards that I have tried have already had the part removed or swiped. Apparently EVERYONE knows this trick or secret. I found many regular bellhousings with the cover missing and many full 1 piece bellhousings on the trucks. That is why I thought I would ask the group if anyone had one that they keep tripping over. Maybe they would help a CAT out affordably.
The junkyards were willing to sell it to me for $ 10.00, but we can't find one.