I lost an end one for a 516 head so before I look for one are the ones on the 62-63 max wedge head the same?
Mopar quit using that type of rocker shaft hold owns on B and RB motors in 1963, none of the later head 6 bolt rocker arms heads like all the 516 head came with them on the motors is what I'm remembering
I've only had 1 or 2 sets of the 1964 stage Three M.W. head casting that came with the 6 bolt valve covers and the later rocker shaft hold downs so I may be wrong on ALL the real early stage three castings having the built in rocker shaft stands