I've got a 2000 Mustang GT, manual transmission, with a Vortech V-1 S-Trim Supercharger, SCT Tuned by Modular Powerhouse here in Georgia.
Currently, it has the stock Vortech pulley (3.6"), a large bore 'power pipe', Ford Lightning 90mm MAF, 42 lb-hr injectors, and a hole lot of other bolt-on performance parts.
I put down 365 HP / 360 TQ to the wheels, and see about 8 psi with the 3.6 inch pulley. Pretty soon i'm going to step down to a 3.3 inch drive pulley which should increase the boost pressure about 2 lbs. or so.
Since I need a re-tune for the new pulley anyway, I figure it would be a good time to install a meth kit, and the prices here seem to be spot on. I've got a lot to learn first about it, but think that a Stage 1 will be sufficient based on my boost levels. The question is, one nozzle or two?