The 996 turbo is currently an awesome deal. The regular ones are a good deal but one needs to check up on the service history.

Weird tidbit: I once put a 993 engine into a 996 rwd chassis and fit very well. The old 993 mount fit rather well and only needed some modifications to work. The engine had a 930 tranny bolted on (g50) and it fit perfectly as well. Of onlt that car were finished some day...