They are the drag profile ones. Im footbraking at 1.74 60'. It was doing a 1.72 on stock suspension with drag radials trough the stock 10 bolt. This year it got a 9" and the caltracs. Running the radials at about 13psi. Et street radials. Pinion angle is -2*. Has some preload on the bars. Just don't know if this is going to be the best or there is room for inprovement in the suspension tuning.