Nice! I was shooting for that same 450-ishs number. 406 (original block), W72, 4-speed Mods: Edelbrock D-port 72 CC heads, Edelbrock Performer manifold, Butler/Comp SP SP Billet Roller Cam 282/288, 230/236, .510/.521, 114LS Tremec 5-speed, Ram Air D-ports, Terminator X FI.
I didn't want headers even if it cost me some HP. But those Ram Air manifolds are like shorties. And it sounds great!
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