I'm new to the whole engine building scene and I don't wanna get ripped off. I contacted a guy on craigslist who said he had PI heads from a 2000 for 75 bucks and am thinking about getting them. I just want to make sure they are the right ones for my car. I'm planning on either doing a PI swap or getting a 4v Short block out of a Mark VIII and putting Pi heads and maybe some aftermarket cams in. Suggestions on what to look for would be much appreciated.