I'm with Mustanguy. Lots of hardcore street racers have tried for years to get plenum/box-style uppers to work with NA combos without much luck. I think it'd even be overkill with the TFS heads. I think you'd be much happier with a longer runner...like the ones Mustanguy mentioned. I'd go with something like a Systemax or something.
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1984 1/2 GT350 (#842 Hatchback w/ T-tops), 302HO, Comp cams Xtreme Energy cam, Carter 625cfm carb, Weiand Stealth intake, MSD distributor, MSD coil, FMS 9mm wires, 1 5/8" MAC unequal shorties, 2 1/2" MAC Prochamber H-pipe, Flowmaster 2 chambers, KYBs, 16"x8" 4 lug Cobra Rs, Falken 245/45ZR16s
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