Sorry man, when I looked at it I assumed you had a Pro RMK and were looking at doing Assault Shocks as it really doesn't specify.
Have you ridden your Assault with the skis set to the narrowest setting? A lot of guys claim the Assault with the upgraded shocks and no sway bar actually handle very well when comparing to the Pro RMK.
Assault set at narrowest ski setting is 41.5 / no sway bar
Pro RMK at narrowest ski setting is 39
2.5 inches difference divided by two and it comes down to 1.25 on each side of the sled.
The question is, will it really be worth the coin???? Some guys will probably say yes and others no.
Good luck, let us know what you decide.