Just brought this survivor home today. Manufacture date 10/28/1977. I’ve been lurking around on this site for awhile because I had a 1978 Invader 440 with the power up kit that I wish I had never sold. I sold that sled in 1985 when fewer and fewer people were riding. I know I’m going to have questions but I’m sure they will be answered here. Thanks for the ad to this site and let it snow!