val and val. job??? for the head guys

I typically run the cheaper SS imported valves. They run about $200/set and are comparable (if nto the same) as Mancini's, but no tulip. I dont build competition engines and that is where I'd use Fererras or Milodons. As far as power, that all depends. The ports are only a part of the entire package, and chaning them may require a new cam and torqie convertor choice to really work well. It all depends.