Description
Saleen S331 and S281, Series 6 and Series 6.5 Supercharger Pulley, made by Metco, 3″.
On a stock Mustang S281, approximately 13lbs of boost. Requires machine work to drive snout. No directions included. Machine work can be done at JB Performance for an extra fee.

Replacement 17mm x 27mm rear needle bearings
Carbon fiber coupler 17mm thick (Lysholm style) 