hey guys..my head is getting built right now..with some five angle valve job and p and p..my question is Mugen head gasket claims u can increase your cmp. by .4..and head milling im not pretty sure..is it worth the money cuz i have a stock b18c1 block with stock 10:1...i was told before that .1=1hp correct me if im wrong..mugen gasket don't come pretty cheap so i need help if i should worry about it or just keep the 3 layer stock..?? thenx.

 

1 piont of compression = about 4 persent more power.