That's correct, first cars were fitted with vw engines but later on, 30 of them received 356 engines and around 8 cars had a lightweight body. In total 97 Apal coupés were ever produced in the early 60's.
In the eighties and nineties, Apal Sunset launched back a small production but rear clip was different. It celebrated the aniversary of the Apal Coupé (maybe in relation with the Porsche 550 RS (VIN 550 0082)?