Summit sells both types of both brands I'm going to advise my customer on which ones I would use but let him make the final decision I may buy a set of the M.W port side if they make them with standard rocker arm oiling instead of pushrod oiling they show for those size heads on Summit site I'll call Speed Master, Pro Comp, direct to find out
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)