The bows are made out of "nesting" tubing, the largest is 1"OD. The three bows are 70" wide, center to center of the pipe (68-7/8" inside.) The front and rear top bow section is 36" from end to center tall. The center bow is 34-1/2 end to center. The lowers are: front & rear- 32-!/2 end to end with 5/16 mounting holes drilled 3/4" and 27-1/4 " from the end. If you need it, I'll have to take mine apart to get the center lower section, but I recall it to be about a foot long. If you them out of conduit, I would make the front and rear 70" center to center wide, and about 70" tall. The center would be 70" wide and 48" tall. You can test fit and cut to the exact length for a tight fit. I'm afraid EMT conduit might be a little weak if you go down the road with it. If you don't use nesting tubing, you won't be able to pull the pins to place it in the stow position, you'll have to take it off the truck when not in use. Citizensoldier gave me a good idea, he said the bows from a 101 will fit in the stake pockets, then the 101 can be attached. It is much lower for off roading and seems to be available. Look closly at the pictures in a previous post, you also need to attach straps to fasten to the bed and footmans loops to the bows for the center strap. I got a set of bows that needed a little work with a new tarp for 150.00 from craigs list. You see them posted here once in a while too. Keep looking, check CL too, You'll find a set.