MtnMax600
New member
mntvipermn-I ran my mtn viper with a 151 and stock tunnel too. I had the flap get sucked in until I cut about an inch off the bottom of the flap. Never had any other issues. I have a set of 144 to 151 Tracks USA rail extensions for sale if you go this route. I was in the same boat as you, My stock 144 track was shredded so I went longer. If you do it go with anti ratchet drivers, you will be glad you did.
