The SR is a good head. I ran them on my pump gas 451 that i ran in my 65 Belvedere. Car weighed 3770 and went 10.50's on pump gas with SR's. IMO they are one of the better choices out there. Can flow really good numbers with a "stock" sized port window, read non Max Wedge. They are worth a look for sure.
"I am not ashamed to confess I am ignorant of what I do not know."
