I haven't mixed and matched parts personally, but from reading through the forums and tech section [hint], it seems the tranny can be used with the right mix.
The rad probably could be used if in good shape.
The exhaust manifolds, or headers, could be used but there will be cut and weld on the y-pipe or source the correct one.
Alternator wiring, the wire ends can be swapped for the correct ones with a little thought and /or research.
It seems the hardest part is combining the two wiring harnesses, as there is differences.