Recommendations for H2 supercharger

[Xotik H3]

I would go with a Magnason for A LOT of reasons on an H2... easy of install, excellent torque and HP LOW in the RPM band (1,000 to 5,000 rpm with max torque at about 1,500 rpm staying the same to about 5,000), tried and true design of ROOTS type blower. I would not change the exhaust or add headers, you won't need more power and both will not add ANYTHING to your ride without a custom tune. Headers and exhaust upgrades will REDUCE boost by evacuating the cylinders more efficiently reducing the pressure in the intake manifold, reducing boost overall stock Maggie boost. You can compensate by adding a smaller pulley to spin the Maggie faster, and you will need a new tune with spark and fuel tables to compensate for the changes... otherwise it may run lean at wide open throttle making for a bad day and holes in pistons. So leave it well enough alone.

I would stay away from Vortech and Procharger on an H2. Each are great products and make awesome power but the difference is the higher the RPM the better the power. The HP and Torque curves on a dyno graph look like the up slope of a hill. You will make more max power at 7,000 rpm with this type of supercharger but how often will you rev that high to use it? There are excellent for a drag car, or higher revving motors.

I have done a lot of Forced Induction conversions on Vette's, Mustang's, and GTO's.