What I offer is a c-nothc that is STRONGER than the frame is in the uncut state.Frame flex in a stock lighting[bed off] is .045 as measured from 1 foot in front of the axle to 2 feet past it,with 200 lbs and me jumping on teh frame over the c/l of the axle.with my c-notch the frame moves .011 same everything. Not cheap the plates weith in at 60 lbs total 6 to 8 7/16 blotsinfront and in the rear of the notch,spread out of a a section longer than 2 feet,closer to 3.price is 175.00 for the notches[2]and bolts,plus shipping.STan