upgrades

I might be in the market for a new XP900, I was wondering if there were any common or uncommon issues that one should know about before purchasing. My planned upgrades would include: UHMW ½" skid plate, front Bumper (not sure what type yet), LED light bar, 4500lbs Warn Winch, Metal roof...

Wanted to see if anyone new a place to send my ecu to for re flashing for some added hp and higher rev...? Has anyone added a bigger throttle Body. ..If some where do I get one...?