what to do, what to do...
Reply #1 –
I would build the car.
Why find something else that's either rusty or wrecked, or will need bodywork to be worth such an engine?
Then you also have the "me too" crowd (Mustangs) of which I regretfully fled to, but at some point another '88 Bird is in the future...
So, my opinion build it, post lots f pics of the progress here, and enjoy the hell out of it.
As for the original 5.0.....no idea...it's not the most desirable version. Maybe find a guy looking for a replacement block for a truck or something..?