they may be a secret here, but not in the mopar community writ large.
Regards Indy heads, i agree. But there are guys who dont want to buy new rockers, headers, intakes when they already have them too.
I mean really, seeing how the heads have already gone 132 at 3200 on pump gas on a street car. What would they run on a 13 to 1 more typical 3000 pound sorted out bracket car?