DoubleD, what do you think about the TTI options? There's 3, I'm looking at #4261-214.
They're for an E-body with Legend heads. But it would suck to buy them and not fit, especially since Summit doesn't carry TTI.
Compuflow is a distributor for TTI though.

1970 Challenger, all aluminum 528 Hemi, HDK suspension, Tremec 5 speed manual