I have one off a 03 WRX, I know that one will fit, PM me if interested.... its off a car with 120K, got it from Oakleaf I think. I did not think the one in my car worked because there was no belt on it. Turns out after I replaced the tensioner and put on a new belt it worked perfectly.. so yeah, I never installed it.
I've got one off of a parts engine, its a bit rusty, but the bearing spins freely, and can be pulled pretty quick. It's easy to swap out just the clutch if you want to keep your compressor on the car and not deal with refrigerant recovery.
