Lethal Performance announced last week it has released its own supercharger pulley for the '07-'09 GT500. The supercharger pulley kit includes a 2.60" pulley ring, which is anodized for a long lasting protective finish. Also included is a mounting hub made from high grade steel and zinc plated for extra protection. All mounting hardware is included to fit everything.
The 2.60" pulley will add 4-5lbs of boost to your GT500 and when accompanied with an air intake upgrade and tune, you can expect gains of up to 145rwhp.
When running the 2.60" upper pulley with the stock belt you'll need to run a Metco MSI-90.