To answer some questions for you guys. Yes, you can get the wiring harness, but there are two different ones. If you have an alternator gauge in your cliuster then you need the one with the resistor. If you have the dummy light cluster then you will need the harnes without and the light provides the resistance. Here are a few links for some more information:
http://oljeep.com/gw/alt/edge_Altern...html#Section_3
http://www.alternatorparts.com/alter...ss_adapter.htm
http://www.alternatorparts.com/cs130_sbpage1.htm
http://www.chevelles.com/techref/tecref14.html
http://www.madelectrical.com/catalog/cs-130.shtml
As far as the A/C questions, you can get a condensor that comes out on either side. The Firebird lines come out on the passenger side. Look for a condensor that comes out on the passenger side. My core support was designed to have the lines on either side.
I am not sure if the truck setups are the same, but I don't think that they are. I'm sure that someone on here has the answer! Good luck!!