For your limited mods I'd say the FMS 65mm TB would be the best way to go and more than enough for what you've got. While a bigger throttle body doesn't really hurt, it certainly won't help you out any. Plus the FMS unit comes with a TPS sensor and an IAC already on it.
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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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