I have a question for you guys and gals that have installed boost gauges: where did ya'll drill the hole for the tubing running to the turbo??

You can drill it anywhere that you like from the turbo to the lower intake manifold. The best place is probably the upper plenum area, where it is flat.

thanks, quantum mechanic. just wanted to make sure that i didn't drill into something vital.

Make sure you take it off before you do any drilling to keep out any metal frags. Mine is installed dead center of middle if upper plenum.

My preference is to drill it in the round portion of the plenum facing rearward and running horizontally. This can help with strain relief etc and the casting is plenty thick there.