yaris and vitz the same?

[toddbhowman]

Hey Guys, I am seriously considering buying a liftback yaris this summer. I come from the honda camp, having previously owned and extesivley modded a 92 hatch and 96 coupe. my question to you it this: is the U.S. yaris the same as the JDM vitz? if not what is the difference. Also, is there alot of aftermarket support for the yaris. from browsing yarisworld it seems as if just the basics exist, ie: springs, axle back exhaust, wheels, cai. what about cams, race headers, ecu tunning, turbo/supercharger kits? Thank you in advance for your input.