I have a set of 1.6 roller rockers for 7/16 studs for sbc like new 3 1/8mi passes 8 are scorpion pro race 8 are crower enduro stainless.the scorpions will cost you over 130 for 1/2 set and the crowers over 250 a 1/2 set.I'd like to get 300 for them also have the locks.