yes it is a Big Block.... Not sure of the case year.........I'll be darned if I am going to pay someone to move the internals of my transmission to another case... I'll shred that thing up & send it back to CSR!!!!!!!
I think I have ground away all the interference with the case itself.....IT's the fact I think the engine holes dont match...

I would have thought for $300 +$$$$$$$$ It would have fit..