you can order it online as well if you don't have a store near you.
go to shop online, then go to "chemicals and fluids" on the left navigational bar, "fuel system," "fuel treatment."
The brand is 'hoppy' and the product is called 'seafoam.' it is well worth the price, it works great! along with this I also recommend cleaning out your intake using car cleaner.
Remove the air intake hose from the TB, and also remove the MAF sensor (if you dont' the car cleaner will damage it.) with an assistant, have them start the car for you (if you do it yourself it will keep dying on you) and feather the throttle while spraying the carb cleaner into the engine. The engine will probably hiccup quite a bit and may want to stall. When it does this, stop spraying and it will steady itself back out. Keep doing this. I used an entire can of carb cleaner cleaning out the intake manifold with the engine running and man, there was so much char looking smoke coming out it was unbelivable! You will want to rev the engine through all different RPM ranges as you do this, but don't rev it too high obviously...
I hope this post will be of some use to some people.
while I'm on it, since I've never had a supercharger before.. is the carb cleaner still safe to use on the supercharged engine? I've only done it on my 88 before, and it worked great for it and caused no problems...