oh i have no idea what the measurements are, i didnt really "measure" anything.. the main rear 2x4 i eyeballed the width and added a couple extra inches on each side of the truck, then i tack welded to the mounts i made. i eyeballed the 2x2 forward bars and tacked one on and cut and moved and modified it until i liked it, then made a second one to match for the other side. once i had them where i wanted them i heavily tacked them in place. i cut the 2x4 to match the width of the 2x2. you can measure all you want, but sometimes you just have to start cutting/welding and make stuff. i suggest you look carefully at all the bumper pics, specifically where i cut the frame and the mounts i made. just start fabricating out of heavy poster board(walmart) buy a couple sheets and pretend its metal, cut big and trim down a little at a time, then transfer your new template to steel and boom, your fabricating. dont be afraid to make something that sucks, just learn from that and the next thing you build will be that much better. start by making some thing small and simple.. ill get some actual measurements for you tomorrow to get you in the neighborhood.