Ok I have searched and I cant find an answer to this (maybe I am dumb who knows) but the question I have is I got a set of 7/16" rockers for pretty cheap(brand new set of 1.6:1 Hardland Sharps for $85) but the heads I am looking at are a set of Edelbrock 60889 Summit Link. Anyway the question is what will I need to do for rocker studs? Will/Can I have the heads machined to accept the proper studs? I was looking at ARP's studs but they only offer 3/8" top/bottom or 7/16" bottom nothing with a 3/8" bottom and 7/16" top(makes sense due to the point of the 7/16" rocker). If machining the heads is the option any idea on potentially what it may cost?