If you’re looking for a project car, and if you don’t already have decades of experience wrenching on engines and transmissions, the best advice you can get is to start with something easy. For example, you probably want to avoid a Mazda rotary engines due to their specialized design that’s radically different from conventional powerplants with reciprocating pistons. Alternatively, sometimes there’s a sweet deal on a “fixer-upper” Ferrari. If you’ve never tinkered with an Italian engine, it could just become an expensive piece of yard art.