The total inside width at the corners is 73.5" the front square section is 27" wide by 8" tall. The box where the winch is mounted is set .5" back from the front and rear edge of the top plate of the bumper. The box is 24" wide by 8.5" front to back and 8" deep. The front plates set on each side are 19" across at the top, the 8" tall section is 9" wide and slopes to 6" tall over 10". The last 2 outside faceplates are 10" and 7.5" respectively. The very tips will be anchored with a 6" tall section of 3/4" thick walled tubing.
I have yet to place all the supporting gussets and reinforced sections where the bumper will bolt to the front hitch reciever and frame.
I am working on a cover for the winch case.
The winch case will fit every winch I could find up to 12.5k lbs.
The winch case, front panel (27"x8") and major mounting points will be 1/4" plate, I havent decided on 10 or 12 gauge plate for the rest.
I will update as I can, and I apologise for not being able to get the graph drawing up yet, its hard to convey the curve for the truck side of the bumper.