Hey guys, I am tweaking my composite molds and would like to know the exact size of the backplate mounts for Jett & Nelsons. I have a SS and it is 2.271 across the top and 2.274 across the sides. I know the minimum is 2.25, but are the Nelson & JETT mounts slightly larger? Right now my plug is exactly 2.25 square, but I want it to fit the 428 backplates EXACTLY!
If a couple of you with each engine could check it and let me know, I would be in your debt!
Thanks,