Found the center of the 2x2....made sure it was the same as the center of the truck...(as close to it as i could)...marked it on the truck and on the 2x2....then spent and hour trying to find refrence points to measure from so i could cut out the bumpers....I didn't have enough of the reciever steel to mock a piece up with the bumpers mounted, so i had to add the reciever then deal with the bumpers.....using an old school plumb-bob and marking reference points on the garage floor, i finally figured out where i needed to cut the bumpers