It looks like i am going to be rebuilding the motor in my 400ex. I need a rebuild kit for the bottom end not sure where to get that. While i do that i want to do a big bore and and P&P head. where is the best place to get that done. I have no problem shipping stuff to places for good work. I want to do 11:1 compression and a cam. Also i want to install a new clutch and some other upgradable internal parts. any help you guys can give that would be great. i am going to be doing it al my self so i will need a manual too.