This is just what you need to french 63's into your frame! A great way to gain all the benefits of 63" Chevy springs with less drag to go with the additional flex they can provide. That has always been the main drawback to using them, mounting the spring hanger forwards on the frame and making it a bigger target than what you started with. Think about adding a pair of Bushed DOM sleeves to french in the shackle hangers to lower the rear also, that can help lower any rig while gaining flex. These require welding to finish and mount, the frame requires cutting to recess the bracket into the frame.