Mufdvr I had a 1988 phazer and my brother had one of those skidoos I think it was a 485 liquid ( I called it the bullhead it looked like the fish) Well I remember beating him up with that 45 hp. phazer in 1989. Well in april of 2001 I spring ordered a viper without knowing my brother bought a 670 ho. skidoo which in its day was a good runner. He let the cat out of the bag in june what he did and would call me up twice a week to tell me how he is going to spray and cover me in snow and how he is going to wave by! by! when he is going past me, it just about killed me to keep my secret all those months without saying a word to him about my viper. I had it all planned out how it would be when I was saying see ya on the trail to him thats when we had a late winter without much snow and figured I would let the cat out of the bag before I went on the trip to newyork with all of our friends and they would eventually tell him when they got back because he couldn't make it. So anyway I had him come over one day and I was pretending to work on the phazer in my yard right next to the viper covered up 3' away There were six other people there and my wife filming from the house and he didn't ask what was under the cover for a good 1/2 hour he went back to his truck and I tried to hurry to uncover one of the skis and my friend even asked me what was under there and I said you will see in another minute,my brother asked three or four times what was under there when he came back and I finally said uncover it you should have seen his face and all of their faces when it was unvailed, they were in awe and even myself because the look of that thing at the time,you never seen a sled look like that before. That is what I'm going to remember about this sled when its gone. When we got out on the trail to him it ran like it looked even in stock form. I have another story for you about a friend with a 2002 worked skidoo mxz traded it in because my viper whooped him and bought the rev with the new motor and beat him up still, he might buy the new machnow 20,000dollars laterand he can't figure it out. I'm piped stock weights too much degree helix now (under rev) and still hauls butt. MTNviper told me a setup last year but can't remember it something with a orange yellow spring in secondary that more than likely would work with this helix.