I'm looking at a 1987 Sunbird GT Turbo for sale but it possibly has a blown head gasket the car starts and runs. It's just about free so I figured why not?? I plan on repairing the engine but if its trashed, I may swap it out. 
Anyway, i am wondering if the transmission bolt pattern matches any other engine than the stock one. Any advice would be appreciated. 
It's a hobby project