I had one of the first generation Alterk's, in my old Cuda, and made several passes in the 160 mph range, and felt as if I could take my hands off of the wheel, at the 1000 foot mark. I never touched mine, and still managed to 60 foot in the mid 1.20's, on a true 10.5, at 3300 lbs.+

My new car has an Alterk as well, with Santhuff shocks, and Lamb brakes on all four corners. Hoping to 60 in the 1.15 range, on a radial, and see no reason why it won't. Obviously, I recommend them....lol. Bill is an outstanding guy to deal with, before and after the purchase.