ideas on the XB
 

what are some major modifications that you can do to an xb and where can you find the cheapest parts for the car.... :P

Did you even read where you were posting this? It's in Scion tC Drivetrain and Power and you're asking about getting cheap parts for the xB...

There's a link in my sig that says "posting guide" ... you may want to run through that once or twice. It would help us as much as it helps you.

Major Mods aren't cheap and cheap parts aren't good. You are heading down a real slippery slope there. Best idea, find your style and save the cash .. Once you start adding cheap parts, your car will just end up on the Rice and Taters post.

Be careful and good luck.