QA1's or Viking but they have to be double adjustable. Pisses me off when I see people spend money on 9 way ranchos that aren't double adjustable.
You need to be able to adjust your shocks for bump and rebound SEPERATELY. Anything else is a huge compromise.
Outside of some fixed factors, such as engine placement, and instant center, which you can't move very much with Cal Tracs and leafs, or a ladder bar for that matter, the shock is the MOST important tuning tool you have. Then comes the 2 step, if you have it. I doubt your shocks ar topping out. You are beating the snot out of the tire.
I see guys use up tires in 30-40 runs. The face is fine, but they beat the sidewalk to death and they are junk. You usually see them for sale for a smoking price. They would be junk none the less.
