Run the switched and constant 12v wires from the gauge down the left side of the dash then under the dash all the way up into the glove box to the fuse panel. (Wires obviously need to be extended). Use an "Add-a-Fuse" thing from Autozone (You'll need two of them), for the constant and switched 12v power source.
For your switched 12v source, use the radio fuse or anything that turns off with the car. For your constant, you can use the Mall PGM, PGM, or IGN fuse.
For the boost and oil pressure gauge (Boost hose and Oil PSI Sender unit and Wire(s), there is a grommet on the left side of the car that leads into the engine bay I believe and you can run the wires through that, or you'll have to drill through the firewall.
Tap into your Map Sensor Vacuum line for the boost gauge.
Hope that helps a little.
