Rear Cat5 Sprocket Aluminum 36t-420 Blk Hon fits_2005-2008`Pontiac`Grand Prix`GXP~2005-2006`Pontiac`GTO`Base~2006-2009`Saab`9-7x`5.3i~2008-2009`Saab`9-7x`Aero~2005`Saab`9-7x`Arc 2018 Ford F-350 Super Duty

2018 Ford F-350 Super Duty King Ranch 2008-2011

1977-1982 Chevrolet Corvette Base 1982 Chevrolet Corvette Collector's Edition 1978 Chevrolet Corvette Indianapolis 500 Pace Car 1978 Chevrolet Corvette Silver Anniversary Edition 1975-1976 Chevrolet Corvette Stingray 1966-1972 Chevrolet El Camino Base 1968-1972 Chevrolet El Camino Custom 1968-1972 Chevrolet El Camino SS 1969-1972 Chevrolet Nova Base

the 551 cams can't be installed in early (1999-'04) Twin Cam 88® engines without a set of high lift valve springs

aFe POWER Twisted Steel Headers are the answer

Rear Cat5 Sprocket Aluminum 36t-420 Blk Hon fits_2005-2008`Pontiac`Grand Prix`GXP~2005-2006`Pontiac`GTO`Base~2006-2009`Saab`9-7x`5.3i~2008-2009`Saab`9-7x`Aero~2005`Saab`9-7x`Arc 2018 Ford F-350 Super DutyRear Cat5 Sprocket Aluminum 36t 420 Blk Hon Features: Anodized FIRST then CNC machined from 7075 aluminum You end up with a trick colored sprocket with silver highlights Unique tooth design Trusted by champions