streetsmoker

Hey, I really want to know what kind of pressures my set-up is truely maxing out at, but don't feel the need to get another manual gauge to mount in the truck so I was thinking. I have access to free 100# gas line pressure gauges and wondered if there is a way you can rig up a test port type set-up with a simple hose running out the window like you do with a tranny line pressure gauge to read boost? If so, how and where would you mount it to get the readings?