Good for a stock ride
I bought the pro ride tortion key set for my 90 chevy K1500. I had an inch lift on the rear leaf springs and wanted to use the 3 inch option on this product to level my truck out. What is not said in the product discription is that in order to go above 2 inches in lift, you need to modify the upper a-arm steel frame bump stops. I can tell that these tortion levelers are a good product, but before you spent 200+ on them, be prepared to do some modifications well above the simple range.