FYI: If you are interested in some under hood bling - R.A.R.E sells billet aluminum pulleys for Pontiacs.
+1 on R.A.R.E....I was slingin belts off when I was doing some 1/4 mile runs...put their billet pulleys on have not thrown belt since, that is with 6K+ rpm.
6k plus?? What kind of set up you have in your car? Were you using stock pulleys or something else?