BURMAD69,
I stretched my 06 Vector GT. I used the trackusa rail extensions, gadethrasher's tunnel extensions and a 136" Predator track. I geared down 1 tooth and I installed the big-boy spring on the monoshock. I am now working with Ulmer on updating my clutch kit.
All the changes were easy. I have not had a chance to ride or adjust the setup yet. The sled looks great, I hope it works as well. Most people would think the sled is OEM.
If you decide not to do this, I have a 121" Ripsaw with about 1000 miles on it. It has the SLP anti-wear pads. Never studded. It is in near perfect condition.
Good luck on whatever you decide.
Bgs