A "newwer" 2006..

[and-why958]

I recently purchased A 2006 Kawasaki 450f. Ive been a Honda CR250man for as long as i can remember, So bare with me. This bikes engine needs a full re-build so I can rip Fully knowing the bike is in prestine conditon. Not knowing anything about 4-strokes, what do i need to replace and what should i be checking for while re-building? Keep in mind this will be the first fourth stroke ive torn into. Any advice is awesome.P/s. No I dont use mechanics.