what do I need to know about superchargers?

Well if you are looking for an entry level SC you can go with a Novi1000 or a Vortech SCtrim. 5-6lbs of boost. They are a complete kit as for what you would need to install the SC. In addition to the kit you could get a Boost and Fuel gauge, a bigger fuel pump. A tune would be a wise move as well. As far as the installation goes others on the board would have to help you out on that.

Need to know, that they are a blast!!

But back to the question,, depending on the shape of you bottom end will determine the amount of boost you can get away with. Definatley want to upgrade the fuel pump and possibly the injectors. One thing a blower will do, is find the weak spots in a motor when you start getting around 10 pounds of boost.

If your motor is in decent shape, I say go with the Novi 1000. A buddy has it on a 347 and is making 12-13#'s boost with the stock blower pulley and Vortech renegade crank/blower pulley. Before the 347 he did have it on a stock motor with F-cam, GT-40 intake and was running mid 12's easy.

With a stock motor and the Novi 1000 with its stock pulley set-up, you should see about 8-9#'s of boost.

I'd personally change the heads and intake vs. a blower. You can have a reliable engine w/ a blower if its tuned right, but heads and intake will make plenty of power and be hella reliable.