67-69 Cuda gas cap recess all the same?

I want to weld in the recessed gas cap area from a 67-69 Cuda on to my 65 Valiant. I want to use the 68 Cuda gas cap in particular because I like the cleaner look. My question is: is that recessed part the same for 67,68, and 69? Just need know if it matters which year I source it from. Hoping somebody has one they’d cut out for me. I’ll get cap itself as a repop.