Yeah, that is a '91 ST which was a 136 track. I bought a pair last year, an '01 and the '91. The wife rides the '01 which is a Deluxe model... . electric start and reverse. I sold the '91 to a friend and bought a '92 with a better track and pipe on it. Still haven't got it all together. It needed a serious cleaning. I get some pictures up when I get the '92 going. I agree they are a really neat sled given there limitations.