Any one stretch a 2001srx out to 136"?

I'm thinking about stretching out my 2001 srx from the stock 121" to 136"
Any problems encountered?
What kits available?
Best track?
Clutching?
Mostly trail riding, some off, no mountain riding in my future

i did my 01 srx, no problems, i used mountain performances kit for the tunnel, sold my srx cooler bought a custom made u shaped cooler for my sled from mountain performance. billet rail extensions from tracks usa, i also put viper rear shocks and springs to lift her up and front shock extensions to level the front and rear. it is a straight forward mod and can be done in a day. if you go to ty .net there are alot of posts on this subject. just do a search. i have lots of pics on the install too. the best track is personall prefrence i went the cheap route and bought a take off doo renegade track, in hind sight i should have bought the ripsaw. ski