Just curious. My 01 has a 4 port 3rz. I'd like to buildup a head on the side, and I can't seem to find any 4 ports. Plenty of 8 ports though. First will the 8 work on the 4 port motor, if so will I have to change anything. Any advantages to running either. Is one head "better" than the other ? I can keep looking for a 4 port, but if an 8 port is just as good, well..... Intake manifold is non issue, as I'm building one while I build up whichever head I'm going to use and they'll go in together. Thanks guys