Well..Yes, they are, but,...There's one guy that says his fit 37 Chev trucks and 36 Chev passenger cars, ONLY!!, I'm inclined to think he knows, but have seen guys selling them on e-bay that claim the 37 Chev truck ones also fit 37 GMC, and possibly later? Have heard that none of the car ones interchange with the truck ones and Yahta Yahta Yahta. Would sure like to hear from some bow tie experts with no skin in the game related to selling something that might have the straight skinny. What I do know for sure is that the 37-38 car ones look the same, and probably way different from 36 car. Other than that, I'm clueless.