i was looking around for a drift car and found [link=http://www.readyracers.com]ReadyRacers.com[/link]. my question is are these good enough to buy, and if so what modifications would i need to do. above each car photo in the more info of any individual car, there is a drop down menu that defaults to the 25 mph electric chassis, so to look at the one i was looking at you have to make it the 45 mph electric. thanks.