I decided to replace the head gasket in my 91 CRX HF in hopes that it is the problem, most symptoms are pointing to that. I was wondering what gaskets do I need? I was told from someone who has done head gaskets before that its cheaper to get them separate, because they usually give you stuff you dont need in the kits. And I was also wondering what all I should do while Im taking the car apart? adjust valves? change front main seal? valve stem seals?