For those of you that already have a donor car, we are also offering a conversion. We have an AE Specific (And all cars with same front end bolt pattern) and XRAY Specific kits. These will allow you to take your AE R5.2 or XRAY X12 kit and build your own RR12. The car is made to work with the parts from both, the only difference being the bolt pattern for the XRAY front end being slightly different.