Paxton Super charger

Ok I have been thinking about the motor I would like to do for my duster.I was planing on a stroker but then got to looking into superchargers.I was planing on a 408 with about 500hp 500tq.I was think about building a 400hp 360 9.0.1 comp and running the paxton supercharger at about 9psi of boost.What kinda power gain do you think I would expect out of the setup.I would like to get 500hp 500tq but would like to get it at the lowest Rpm.Street/Strip car.Car will be about 3400lbs 3.73 gears 4 speed when I am done.

You should snoop around the dakota boards. A lot of us run supercharged 360s and 318s as there were at least 3 bolt-on kits available four our trucks. I have had a paxton and a vortech V1 and V2 ... the NOVI 2000 is a sick blower can make near 600rwhp on a 360 motor with cool air and good gas. If I were building a motor specifically for a centri, I wouldn't go lower than 9.0:1 and might even run 9.5:1 or more. A centrifugal SC pulleyed to 10 psi will be weak down low and a low comp motor wont help....