I MIG welded up the exhaust on my '31. I have 7 welds on the pass side and 8 on the drivers plus one in the center of the 'H' pipe. That's 16. Had I gone over the rear axle, I would have added 3 more per side for a total of 22. There are no crinkled or crushed bends. Could I have done it with less - sure, if I had access to a mandrel bender. 117 - ??????