Where do I tap into the vacuum line for an aftermarket mechanical boost gauge? Considering Bonnies come with 2 MAP'*, I don't want to interfere with either'* readings. What fittings and what not do I need to "T" into the line if possible?

Under the nose of the super charger is what I've read, all you need is a 'T' fitting I think its 4mm tubing.

Yeah there is an existing T-fitting under the nose going into the intake manifold, so do I bypass this?

No, you will have to cut the tube and install a new T fitting.
This will sense the pressure or vacuum after the supercharger.

Lets get this straight.

Ok here we are coming in from the right on the vacuum line and I'm hitting the fuel regulator, ok now we keep on cruisin' and we hit the T-fitting going into the intake, now we go a few inches and BAM...we cut, install another T-fitting, and run a line to the gauge. From there we continue onto the MAP sensors. Am I all gravy?

Clubgp had a thread with his, if you want to search, i think even pics on one of the clubgp affiliates website (detroit maybe?)

Gravy you are.

Gravy talk make me hungry!!!

http://www.grandprix.net/upgrades/boostgauge.html

http://www.dans-website.com/gauges.htm

For GP'*, but practically the same.

Thanks Sol!