OK, I ran into some issues that I thought I should mention. There is no way to get the rubber fitting over the barbs on my FPS. The opening is probably 2-3x the dia. of the original. If you stretch it too much, over time the rubber will crack to relieve the stress. A smaller barb is highly recommended. Probably best to mimic the originals. It's pretty long. Look at the new bolt you made, it's probably twice as long.
I'd also consider sand blasting the bracket. I polished up the billet drum and it looks really nice but it's almost impossible to clean the bracket. The bottom half of the FPS isn't much of an issue since you can't see it.
use a larger tube that goes over both of them, that should do it.
the bolt has to be as long as the upper level of pressure, so to make it flush would limit the adjustment, can be shorter but that depends on what is the upper limit of the range you want.
most of the aftermarket ones you see stick out about 1/4 an inch to 1 inch and that depends on how much pressure they are set to (so if you run 15 psi would stick out more than compared to 50 psi).
the nipple on the new bolt is small enough to accommodate the stock rubber elbow.
yours was the prototype so i made it with what i had around, i didn't have a smaller fitting than that. It's 1/8'' NPT so eventually you might find a smaller one to replace it. If you run it and you're happy with it i'll send you a replacement for the aluminum portion with the new style adjustment screw (it is also shorter than yours since it doesn't need the extra space for the 90 deg vac fitting).
