The 80 or 85 series want matter as you are nor dealing with gears. Remember if it is an emergency then all things don't have to be perfect. They just have to be safe. Install your spare and you want have any problem. I have the is system and it has the caster and camber just like your truck. It would be good to call mor-ryde and they should be able to tell you the closest place to have the rv aligned. Good-Luck.
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