If that is the case, you will always need a head with interchangeable domes, so it isn't a bad investment. Just not the best bang for your buck. The timing plate is though. Minus the porting is pipes (T6 for nonported but you will likely soon tire of them and they don't seem to run well on ported motors). Not much else worthwhile that I can think of next to porting bro. Porting is the heart of it. Like I always say, take you rtime and plan your build. It is much cheaper that way!
SP