Growing OLD in VA.

Hi, guys.
I'm fixing to turn 68 and for some $^**( reason got back into drag racing.
maybe my mine is going, who knows. This is the first Mopar engine I'm building and
heads are driving me up the wall. X,J, W2, Not to mention casting numbers. I have a set of 4532693 castings, I know they are W2 heads and are race heads. Milled rocker surface with
closed chambers, 2.02 and 1.60 valves. Problem I'm having is I can't find any info on these heads. the casting number is no where to found, or I can't seem to find maybe. ( getting old)
I'm guessing these are good heads. and plan on using them on a 410 build. What RPM range will be needed to make them work, and how big will I have with my cam. I know you guys can Thanks. 1967 Dart sedan ,2700 lbs. 727, 4:88