Intake compatibility

Yes, however depending on what manifold you get. the port sizes will be different. If you get a Performer 318/360, it will have 318 ports. If you get a perfromer RPM or AirGap(recommended since it will end up on a 360 anyway) it will have 360 ports. 360 ports on 318 heads will make some unwanted turbulance, but its not quite what i would consider a huge deal...since the intake will end up on a 360 one day anyway. hope it helps