hi I'm just now getting into hondas so I decided to join this forum.. my name is william and not sure if this should be posted here but I have a question, been having a hard time with my 94 d16z6 swap civic really rough idle I do have to replace coolant at times but I've replaced hoses rad intake and throttle body to skunk 2 im thinking head gasket? If so being its a stock motor pretty much i was going with a cometic gasket can anyone point me to the right one to get as they all have different mm and such