Jan,
I have had much the same work done. It started with a turbo shield and up pipe, then MAF pipe. I did the covers in Feb. Right now I am working on an alternator. I pulled another 120A CS-144 from a Riviera. I found several 144's on Caddy's and other high option cars but this one was a 120 amp model plus it had the same pulley as the TTA. I wanted another 120 and the same pulley so I did not have to borrow the stator and pulley from my origional, thus taking the car down while I messed with it. The casting number on the TTA alt is hard to come by as well so I just prefered to take it off and keep it together.
Any way, I am in the process of smothing the case to ready it to be shot in white powder.
At the Nationals this year in I picked up a 200 amp kit from turbobuicks.com that I am going to end up using. It was like $79 and included a new stator, regulator, brush set, and rear bearing. By the time I had my alternator shop clean up my stator and I bought the rest of the parts, which I was going to do anyway, it worked out to be just a few bucks more plus I get a 200 amp alternator out of the deal.
Brent