Is there an FE specific head porting tutorial somewhere? I've got a set of C4AE-G heads that already have CJ valves in them, but I'd like to port them. This will be for a street and maybe occasional strip motor. What I'm really looking for is photos of what to take out, what to leave and what not to touch so I don't screw this up. These are great heads and I don't want to mess them up. Thanks all!