1972 chevelle malibu 4 door?

I have a 1972 chevelle malibu 4 door with a 350 small block and a burnt up turbo 350 tranny. I was wondering were i would go about finding out what vehicles at a junk yard would have transmissions that would be a perfect swap. i know alot of newer GM's in the yard have the 700r4 that i think will bolt up but may require cross member and drive shaft modifications. So my question is were can i find the info to know what vehicles have a direct match. thanks any input is greatly appreciated.