New to the forum. This past week I picked up a 2004 400ex pretty clean for the age. Guy said he ran it parked it and didn’t ride it for awhile so I figured clean the carb good to go. Turns out that was far from the problem. Today I realized the timing chain was way off and after readjusting realized it had bent intake valves. Since I have to pull the head to fix the valves I’m wanting to go all out bore kit and a cam it already has an exaughst. Any tips on where and what parts to buy? I’m a marine diesel mechanic so install won’t be a problem. What setups are y’all running? Id like more bottom end and maybe add some on top if possible.