I'm trying to find out what my options are for stroking my M3 motor to a 2.5L. I know Top End offers a kit, and so does Turner Motorsport. Does anyone else offer a kit? Dinan offers a built motor, but I have PLENTY of building experience, and would rather not pay an insane amount of money for someone else to do the work that I enjoy. Dinan, aside, which kit is the best? Has anyone here done the conversion, and what are your experiences? Am I better off piecing the parts together and using maybe a Dinan chip for the conversion? Price-wise, the Turner kit is the best at about $2200. Any help would be greatly appreciated, TIA!