[Fiddyfoe]

If you looking to install a boost gauge - Under the intake is a black hose with a green stripe - Tap into that.

Indeed there is. I tapped into the only one I found and it showed 15 in Hg on startup and 20 after a rev. And there it remained until I unhooked and bled off vac. Apparently it goes to a vac reservoir. No joy. There is, however another short run of vac line hidden just below the R side of the intake manifold and accessible from above. Found the location on a Cruze site. Easy squeezy, unlike the other hose which was only accessible from underneath and with one hand. The hose barbs are a challenge single-handedly as was the butt connector when I had to undo the original hookup. It’s a Bosch gauge and goes to 25 psi and the gauge is a bit off scale on full boost. About $25ish at AutoZone. Ten bucks in brass fittings from Lowes to transition from rubber vac line to the small bore nylon tubing to the gauge. Works like a champ.