IaM-Ray posted:@Stan Galat FWIW, I have 4 high spots on the metal tubes. One per wheelwell that has that same valve that I showed you but I am not sure of the NPT off hand. Not sure how high the valve would be in the wheelwell, but I can try to measure how much space I have and see if the valve could be accomodated.
I just found a spare I had for the Speedster and I'm surprised to see it's 1/4" npt. Install depth requirement is 1". CTC part 61104, , Ray.