The weight is in the front, so run a higher front ride height, use the green dot hard front progressive springs and softest rear springs for more weight transfer to the rear. Use more rear toe in (1 out). For more side traction, use 1 down for the anti-squat also. Also modify and mount the buggy rear arm mud guards to make the truck jump more level. Try 7/5/3 in the diffs to slow the steering down and give more rear traction. Run the rear hubs forward and front arms forward. Use the inside holes for the rear outer hinge pins for more forward traction. Use thinner rear shock oil so it squats more.

took out raced it this weekend and handled much better still a little loose in the rear but much better