I was just on here looking for a source of the pulley. I actually have a CS-144 that I am putting on, but need the right pulley, its way too small.
The alternator in the truck also has wrong pulley size. The modified CS-144 that I bought doesnt fit right in my truck though, I think its for the later model trucks. The top bolt has a longer, like 2.5" bolt shaft with no threads, whereas my alternator has just about an inch thick threading for the bolt. I have found a way to make it mount, and the belt lines up and it worked fine except read about 1000rpm too high. And I will need 1/2 to 1" longer belt for it because it is bigger.
I see on their site that the 96+ GM vehicles have the 2" two foot mounts, whereas I have one foot and one ear. I told them the vehicle was a 94, and I even sent them a few emails complaining it didnt fit right, and those bastards didnt help a bit. I think it was that alternatorparts company, so just know which housing you need when you order. I bought it a couple years ago. The bracket behind the alternator didnt fit anymore either, I havent had it on for over a year.