"...I'm looking for a 64 110 head for my rampside...head number is #3856632, but its my understanding these numbers will work: 3886256, 3886257, 3856631, 3819876..." John, I believe 3856631 is a 65 head; if so, it will not be a correct match for the 64 jugs. Someone smarter than I will likely comment further. Cheers! Mike Mauro