Help! centerforce or mcleod

Am running a 418 sb stroker w/about 500hp at the fly wheel. Need a clutch set. Would like advise on which to use. A centerforce dual friction set or a mcleod clutch plate 260521 for up to 500hp or a 260621 for up 600hp with a pressure plate 360953 both mcleod plates are 11 inches were as the centerforce is only 10.5 inches