Looking for opinions

[84_GT350]

As everyone knows...opinions are like @ssholes. Everyone has one. So I'd like to hear yours. I'm planning on building a single turbo motor for a street/show car and don't know which way to go. I would love a turbo'ed 331, but I'm afraid it'll overpwer the stock block (even if it's race-prepped and has a main girdle). So do I go with a 331 and keep the boost really low or do I go with a built 306? I'm not sure if there's a big difference there, but I figured I'd ask you guys what you thought.

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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