Very High Quality Kit. For a limited time, get a free 360 Cool Spool rebuild kit with your purchase. Easily outperforms the competition. Turn your stock GTP38 into a monster with this exclusive kit. Kit includes OEM style guided (not flat and restrictive like others) back (seal) plate, giant 66/88mm extended tip ET Blower IIII 66/88 Billet 7+7 comp wheel that stretches out past the mid 90s and is super tall to grab more air (stock is 60/80), 4 inch inlet (stock is 3) ported comp housing, seals, and 4 inch hose with clamp. Guaranteed to add the HP and Torque. Fits 99.5-2003 F-250-550 and more. Made in North America!