i find it easeyest to measure from your stock hanger bolt hole forward however far you need to go take a square and make a line going up and down the frame where the new hangers bolt hole should be then take the square and make a line going up and down on the new hanger that runs through the center of the bolt holes make the lines line up and tack them then double check that they are centered on the frame then double tripple and quadruple check your measurements when you shure that every thing is right do the final welds
(if you want to test it first just to make shure, just weld a 1/2-3/4 in bead on each side, bolt every thing up and set it on the ground and make shure every thing is good then you can do the final welds this step is not nessisary just an extra percaustion if you not shure about somthing)
