i just finish building my motor,it's a wrx with a sti ver 6 ra crankshaft,eagle forged rods with je forge pistons and it's closed deck ,i just bought a set of ver 4 heads .I heard that the ver 4 will raise my compression ratio is this true??? because the heads kinda look the same i've put cometic head gasket so there a little thicker.

thanks for the answer

lorgan :banana: