Just bought some 9 thread heads for my 03 and had a few questions. The heads are bare so I will be sending them out for a valve job and buying springs, valves and cams. My questions are, first; what all should I have done at the machine shop? I want a valve job but don't know what else I should spend money on. I heard porting our heads doesn't yield much, suggestions welcome. Also, I'm buying cams but don't want them extremely aggressive, maybe a little more than stock so any suggestions there would be greatly appreciated as well. Also is there a how-to thread on assembling our heads? Just don't want to mess is up and have searched Google and couldn't find a good one. Thanks all!