I’m also partial to the MP RV cam for this, especially if you stay with gears in the 2.94-3.08 range and 31-32 inches of tire. This is effectively like having gears closer to 2.76. It’s probably overkill for low rpm torque at your weight. But I definitely consider it in the zone of “one step above stock”. It would work exceptionally well here.
Mopar Perf. ''Purple Shaft'' Hydraulic Camshaft Kit
