Ofna Jammin CR buggy and CRT are interchangeable. However, keep spur size in mind since the CR mount sits much lower/closer to the chassis...a large truggy spur used in conjunction with the CR mount could rub on the chassis. Additionally, either Jammin CR/CRT (CR is preferred because it promotes a lower center of gravity) mount will work with the DM-1 or DM-1 Spec.