Hook up the boost gauge to one of the lines coming off of the vacuum block, on the top of the throttle body. Buy a plastic tee from the plumbing dept. at City Mill or Home Depot, and a short piece of rubber vacuum hose (to join the boost gauge line to the tee) from the parts store of your choice.
A/F Gauge - Not sure how to hook this up. Splice in to the O2 sensor wire?