In Glacier it depends on how comfortable you are mountain driving. We ran the length of Going To The Sun Road last June in our crew cab dually without any problem whatsoever. I nor my wife ever felt uncomfortable with the truck on the road. No you can not tow over it the length restriction is 21 ft
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07 GMC CC LB dually LBZ, Idaho Rob EFI, DeeZee boards, 50 gal TransferFlow inbed tank
05 Mountaineer 298-RLS,
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