Hey Jay,
Go to Apex in Tempe. talk to Ben over there. I talked with him and he says his shop will do it for about $600. I installed my blower myself, but Apex has done other mechanical work for me and I'm sure they can handle your S/C install. Ben actually used to be a service advisor at the local Isuzu dealer, before he started his own shop. He still has connections at the dealership and gets any Isuzu mechancal questions answered by the head mechanic.

Give him a call at 480-967-6515, or Email at apexcivic@aol.com