I have that kit ... don't be fooled into thinking its a simple install. The plates to bolt the front boxes on can only be used one you've notched the rails - which is the most important part. Bolting them in just holds them in place while you weld. Ideally I think it would be better to cut those plates off once the box is tacked in place, then weld the end of the box to the frame. Otherwise, moisture is going to get behind those plates and work its wonders. That's my plan anyway!