Underhood MAP sensor?

[I wear pants]

I am currently in the process of converting my 85 GLH to TII. I was wanting to use the fwd stage5 computer with my setup which requires the use of a 3 bar map. Is there a way modify my car to use an underhood map sensor?

[GLHNSLHT2]

yep just get some map wires from an 87 car at the LM and run 2 wires from the MAP to the LM and solder them to the factory ends and plug them into your existing plugs.