I did a little research on speedmaster cylinder heads, I didn't know that they are procomp heads. I've heard that procomp heads have to be gone over before you can run them, is this true? I do have a budget that I would like to stay at, but I don't want to have to re buy parts either. My dad was a believer that cheaper is not always better. Is there any other affordable cylinder heads for a 318? Does afr make cylinder heads for it?