This kit was designed to box the front section of the 1966 Chevolrolet C10 frame. This kit includes tongue and groove cross slats to increased strength and tie everything together. 
 
This kit is only available in 1/8in. mild steel.  The front frame on these tucks rise is not perfectly straight and requires some flex in order to pull the plate tight to the frame for welding clearances. 
 
**This kit was designed around the 1966 chevrolet c10, it should fit 1963-1966 pickups but please measure and verify it will fit your appliction properly.