I told my son to find us a car to tool around on. Ended up buying 76 280z. Engine was taken out. I wanna put something in but really haven't messed with old foreign cars so I don't know what will fit with out too much work. I don't have a lot of money, in the navy. If anyone could give me some suggestions as to what will fit and be pretty cheap I would be very grateful. My son has autism and is very unsociable so when he was very excited about this it blew my mind. Thanks.

Easiest, and probably cheapest alternative is to get a used, carburated L-series Z engine. Plenty of power and much easier to install than a non-Z engine. If you can find one that doesn't need to be rebuilt it will drop in with virtually no modification.

welcome another one from the NW. I agree find a good used Z engine. If there are no EFI coponents left in the car carbs would be the way to go.