Dave, the Corvette TPI isn't "TBI". It is either batch fire, or sequential multi-port FI, depending on year. The engine parameters are controlled by one computer with PROM chip.
I would be stunned if they went through all the work of an engine swap and kept the old generator.
Apollo, just pull the alternator (two bolts, and two electrical connections), and take it in to any parts store. They will check it for free.
Two doors, four doors, wagons, and ragtops.