I have a 13 Laramie with 3.42 and 35 inch Ridge Grapplers and have pulled my 9k travel trailer with 4 passengers and a bed full of stuff without any problems.

Mostly flat but some grades.

I'd love some 4.10s but haven't "needed" them. Indo have an ultra low stall billet convertor and flexplate and tow with a 30hp tune.

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