sorry to burst your bubble but i am 90 % sure that the black chassis in the pics is just the original chassis painted black. also i went to the wepage of the xj and translated it and it was talking about an aftermarket part kit that came with all the pieces in the picture of the resin bushings ect......., not a new car. it looks like the guy painted the chassis black just like the guy who made the mini sk. this car is awesome!!!!!!!! i am determined to do something like this. im sure most of you have been to this site but he has updated it with new electronics, like m3 cube esc!!! check it out here......
http://www.siukeung.com/link01/link01-07-04.htm
click on the part one and part 2 of the mini sk