I'm going to bore out my l20 into a 2.2 and will be using NAPS-Z pistons. I have several heads to choose from but I need help figuring out which would be best. I have an A87 open peanut head, a w58, a 210, and a closed u67. Can anyone offer any advice? I figure I can run around 10:1 compression ratio. I plan on running 44mm mikunis but I may also use 44mm webers instead. I don't want to spend dayscleaning up every single head that I have so I rather just get good advice on what gives me the most power without destroying my engine.