I believe my 00 426 has a leaky head gasket, so I am going to get in and repair it sometime next week. My question is, since I'll have it apart, any other suggestions of what I should look for/replace and what not? I am also thinking of replacing the piston and rings, but I like being able to get my 91 octane gas around here. BTW, I live in a small town and would have to drive at least 1 hour to get anywhere that would sell something above that. So I'm thinking the high compression stuff is out. What do ya'll think?