any 8 valve exhaust mani will fit.
the belt was a serpentine, and I never got it to work quite right.
the belt route was way to crazy and it was always slipping, and because the belt also ran everything else, the car was always having issues(not spinning the water pump properly, or the alternator, etc..)
I decided this time to leave the stock accessory belt, and add a serp belt pulley for the charger outside of it.
that way when the charger shreds a belt I can still drive home.
search for "more supercharger talk" and you will see my escapades with the supercharged VW, and see my thread in the "non vw diesel" section about my diesel isuzu i-mark for info on the supercharger setup I am running now.
as for EGT, it can be crazy high, or not depending how much boost and fuel run.
-Owen