Ive Got A 2004 Z71 With The 5.3 . All Stock. Ive Just Got Dual Flowmaster Exhaust. Anyway I Was Given A Throttle Body From A 6.0 Would It Be A Good Or Bad Idea To Put It On. Would It Make A Noticeable Difference. Will I Gain Or Lose Anything. Thanks For The Help Ahead Of Time.

 

Throttle bodies from the 4.8L, 5.3L, and 6.0L are all identical as well as the intake manifold. So you would gain nothing and only lose $$$