I want to freshen up my 68 block that had been bored 30 over. I've been reading alot about zero deck height and have a few questions and I guess I want to use the KB237 pistons, Elderbrock rpm 84cc heads and matching heads and I want to use a hydraulic cam. I'm not for sure what a good carb would be, I was guessing a 870 street avenger?? But what I want to know how exactly to get the Zero deck height and what gaskets to use? My block has never been square decked. I can work on engines doing basic stuff but kind of a lost to the tech stuff. Thanks!