I have a 90 si with the stock d16a6 in it. Well I also just bought a d16y8 and was told by many people if I don't want to swap the whole engine just yet Just swap the head from the y8 on the a6 and i will receive better compression more horsepower and If i wire it correctly VTEC? Is this a good idea for now until my block goes cause I don't really wanna swap the complete engine just yet??