Originally posted by Si_Sean
ide stay away from a larger throttle body, you'de see more gains with a stock throttle body. Unless you you do decide to make it an FI system, then the more air flow the better.
The biggest downside of a larger TB is poor throttle response, and I normally do not suggest it as a beginning mod, but in the case of most F-series engines, the TB and intake manifold end up being choke points.