[s-cars] Boost gauge

[Frank Amoroso]

150 121 is probably the best bet and what you could get MOST people
interested in. To be honest, your face project will be dificult and
expensive enough so you probably want to stick with something like the
standard range on the 150 121 as it would be the best match, least
dificult, and appeal to the largest group of potential purchasers.

FWIW, if you figure it out, I'll take two.

Frank at s-cars.org