Well, I didn't dyno the car before I went from the hybrid turbo to the T-66, but I was able to cut a few 1.8x and even 1 1.79 60' with the hybrid turbo. At 19 psi w/ the T-66, it made 412 lb/ft of torque and started breaking the driver's side axle. Anyway, I am not using Ross's adaptors, but a custom axle for the viscous LSD unit utilizing the outer 280zxt CV housing and the 280zxt companion flanges. It is the outer CV housing (or cage) that I have broken twice now. It has just exploded off the line... It may be that the tripod sits further to the inboard side of the cage (weaker area toward the diff) with these custom shafts, and that is why it is busting on me...