I recommend using the 800 lbs Reese Strait-Line Weight Distribution System w/ Sway Control item # RP66083. It has a tongue weight range of 400 lbs - 800 lbs.
The 1,200 Reese Strait-Line Weight Distribution System w/ Sway Control item # RP66084 is going to be over capacity for a 500 lbs - 800 lbs tongue weight and it will be pretty stiff and uncomfortable to drive. view full answer...