I agree, the original big block Olds engine is huge and extremely heavy, and probably not a good choice for this project.
The Toranado gearbox could probably be made to bolt up to something like an LSx engine which would be smaller, lighter, more powerful and with much better fuel economy.
The original Toranado diff and front suspension are just totally in the wrong place.
A Toranado engine sits exactly right between the front wheels. The Cord engine is set way back a long way behind the front wheels.
The only usable part of a whole Toranado would be just the bare automatic transmission, no need to get a whole donor car.
Jerry, what is the front track width, and wheel flange to wheel flange width of your Cord ?