I'm doing a complete chasis swap on a XP............Swapping from a 120 shorty to a 146"...........Here Is what I am working with: 2005-144" rear skid,Polaris Assault 146" Cobra track 1.37X2.86 pitch,C&A Ultra Pro XT skis, a complete running 2008 MXZ Adreniline shorty and 154" complete tunnel......................Any tips on making this swap or problems that I may encounter..........Not sure where to start? I have done a similiar swap last year on a S chasis but this is a whole new Animal!! Thanks for any Help!! Gary