Im building a roll cage in the back of my k5 using 2 off the stock roll bars that came in some of these vehicles since there already prebent. I am going to be extending one of them to fit in the middle of the truck roughly 12" high using the tubing that connects to the wheel well. Then I will be running 2 pieces from the middle to the back roll bar roughly 4 to 5'. I will also be connecting the middle roll bar to the front of the rear wheel well just like the back one is connected for strength & support. These roll bars are 2" OD and 1/8th" thickness. I found some 2" pipe with the same thickness and I was wondering if it would be ok to us this pipe for the two top lengths between the middle and rear roll bars or is there any safety issues here if pipe was used. I would think the pipe if anything would be strong enough depending on its metal composition.