I had a set of TP's that I used 5/16" stem stainless valves. Stock replacement 426 Hemi intakes and extra long 5/16" BB Chev exhausts. Light like Ti but cheap. I also used a 1.88 exhaust which was a bad move, the shrouding killed flow more than helped. Those cut down to 1.80 and new seats installed fixed them right up.
