Bow corners for M37s are not cheap, $35 each for a new or old one. Midwest Military makes exact copies now, but it’s low volume so cha ching. And since they are making them that makes NOS or used ones to go up, I have seen some NOS ones for more already. The trailer bows are a different size so those don’t work. It would have been smart for them to make all the bows the same across the fleet!