39 7M, No need for anyone to PM you to answer the fitment technical question. Those aren't "state secrets" - LOL! Someone will surely be along shortly to help with that answer. If you are looking to locate/purchase rocker arms, post an ad in the Truck Parts Wanted forum. wink


~ Dan
1951 Chevy 3 window 3100
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"My Grandpa Carl's Truck and How it Became Mine"
1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver)
US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)