I have the VDO vac/boost (30/30 I think) in a single pod. I like to see the needle swing back and forth
I got my gauge and pod from Poston's. I use the tape so I do not have holes in my A-pillar. It has never fallen off but I do not leave the car in the sun.
I used the Autometer Sport Comp 3303 mechanical and painted the silver bezel with SEM blackout trim paint. It matches my Caspers knock gauge face & bezel, looks mint!