I have the Autometer Ultralite series with the green 'sock' they provide over the bulb. I haven't seen the lunar series in the truck. I also like the ultralite b/c it is a 20 psi gauge while I think the lunar is a 30 psi. The 20 psi gauge will give you a little better resolution.
NHTOC # 68 2002 DSG
FTVB & deep pan - awesome!
Front and Rear Hellwig swaybars, bilstein shocks, Denso IT20, Column pod w/ Autometer ultra-lite boost gauge, K&N panel, Retrax tonneau, slotted/dimpled rotors & Hawk HPS pads, LFP e-fan, LFP heat exchanger, 170° Stant t-stat