Might work on one of these TT firetrucks mentioned here periodically. It is 1" hard brass pipe,56" from bottom of flange to top of pipe,the offset is 13" from back of pipe to end of thread,the standoff bracket is 5 1/2" from flat to closest edge of pipe,the flange is 3 3/8" diameter. It has a seam or splice up 17 1/2" above the flange and that may be why this replaced sometime. This thing can also be shortened to fit. I've seen firetrucks where both of these rear rails were mashed forward from being rearended,maybe someone can use it. $145 plus shipping. Please PM me if interested.