i was wondering what would be best for my truck which one is faster and has more get up and go and what kind of transmission and carberator would go best with the engine that meets my needs. i know im thinking a little ahead of my ball game but for future plans id like to start finding this stuff out sooner rather than later. and before i put a motor in the truck i will upgrade everything else such as: Tires, rims, brakes so i can make sure i have maximum performance

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current truck information:
77 chevy silverado
regular 350 engine
regular 350 tranny
tire rims and brakes they all suck but ill fix it
just let me know what you would go with and why