Description
MSD Pro Billet Cam Sync Plug Hall Effect Billet Aluminum Mopar RB Series 37017SK 927 and 929 dual valve WEI7155 927 and 929 dual valve springs 375 Inch ID 2 1 2 Inch Bolt Spacing 1 4 Inch 20 Threaded Mounting Holes land speed racing to top fuel dragsters an incredible breakthrough in power and endurance