Quote Originally Posted by Peter Jones View Post
The 1800 from the MK3 would be a good choice too. Most dimensions are identical to the 1600.

Main difference is location of the top radiator hose and the need for an electric fuel pump.
My ADZ (Mk3 1800) was using a mechanical fuel pump, same as the mk1 1600 motor. It really is the easiest swap you can do, and an engine can be got for less than 200 if you're looking in the right place