So as far as I know, my father purchased it new from a dealer here in LaCrosse, WI and the Sprint package was already installed. From what I know of the Sprint, there was one dealer on the east side of WI that did the Sprint package upgrade if you wanted it. I've tried and tried to get official numbers on how many were produced to no avail. I intend to crate up and keep the 301 because it's definitely all numbers matching. I just want a little more giddy up and reliability to make driving it more fun. I think my biggest concern so far was if they were swap well and could use the same engine mounts.