I know the gear would need to be change but the verta also.....as far as not 60 not only did one person tell me about it but a few even comp cam said much durat. on the cam where the cam was working,not matching the verta flash,and cam could have been adv/or ret to help..car ran like hell on topp end put it in to high gear as I went through the lights at the end of the track, tryied to leave the lights at diff. rpm and never could get it to 60 ,