internal engine work

New busa owner here. My first bike was a 2001 suzuki gs500 which I abused and learned all of the maintenance I SHOULD do, but never did. Then my buddy was going to junk a 94 kawasaki zx11 that was in pieces and missing parts which I took home instead a few months ago and now she's running and...

This example would be for a street bike and not raced at the track. If generating a peak power of 250-300 horsepower via a supercharger (or a turbo) on a used Hayabusa, does the engine have to be low mileage? If so what is low mileage? Does a certain number of miles necessitate internal engine...