ah right, kool, yes losi xxx-s are no good, well if u are look for a good 540 car any of the high performance roling chassis are goign to do well., but for a beginner, i would go with the hotbodies, as they look really good.
amainhobbies.com have the chassis for sale for like $150 us, but by the time u do te conversion and post , ur probaly looking around the $250 mark.