I bought an Autometer Boost gauge for My XR4Ti and am trying to figure out where the best place to hook up the boost/vacuum line... Need help asap and a pic would be great

 

We don't get many XR4Ti's here in the UK, so you might struggle getting a picture. As far as the best way to hook up the boost/vacuum line is concerned, the most common place is the plenum chamber. If your engine management system uses a MAP sensor, you could just tap into it's pressure feed line.
Dean

 

I would'nt plumb a boost gauge in off my map sensor line, i have a single solid tube for my map sensor on its own so it gets a proper vac/boost signal.

Just anywere on the inlet manifold for the boost gauge find another vacum hose to put a t piece in.

Not the brake servo hose thow.

 

Had a quick look on the internet this morning and found this...

Inside the green square is your plenum and the smaller of the two pipes in the orange square, looks like a vacuum/boost feed which you tap your gauge into.
Dean