I was thinking about getting a throttle body from a 3400 Impala for my Century. It'* a little bit bigger (54mm compared to my 52mm IIRC). Will there be much work to swapping them, and will there be much of a difference? It'll be from a JY car, but I plan on extensively cleaning it before it goes on. While I'm at it, is there anything else that can be easily swapped from the 3400 (or even the 3500) to give me a little more power/throttle response? I'm already working on a shield for a SRI that I have in the works..

i dont know if it will work but i seriously doubt it would make any difference, bigger tb'* equal less throttle response and possibly more power in the highest rpm wot range but only if the oem size isnt big enough to begin with.

i thought it was 56 for the 3100