Vehicle	Header Part Number
Escort 99-01 - 2.0L 4v Zetec	1680S-1JS
Focus 00-01 - 2.0L Zetec	1680SJS
Focus long tube 2.0L	6680
Focus SVT 02-03 2.0L	1680-3
Mustang 1998 3.8L w/air injection	1619-3
Mustang 1998 3.8L w/o air injection	1619-2
Mustang 65-73 - 289/302	1650
Mustang 65-73 - 351 W	1653
Mustang 65-73 - 5.0L EFI	1650-1
Mustang 79-85 - 5.0L 1 1/2	1621
Mustang 86-93 - 5.0L 1 1/2	1620-2
Mustang 86-93 - 5.0L 1 1/2	1624-2
Mustang 86-93 - 5.8L	1639
Mustang 94-95 - 5.0L 1 1/2	1620-4
Mustang 94-95 - 5.0L 1 5/8	1624-4
Mustang 96-98 - 4.6L 2v	1625
Mustang 96-98 3.8L V6	1619
Mustang 99-01 3.8L V6 w/o air injection	1619-1
Mustang 99-01 4.6L 2v	1625-1
Mustang 99-02 3.8L w/ air injection	1619-4
SVT Cobra 96-97 - 4.6L 4v 1 5/8	1625-5JB
SVT Cobra 96-97 - 4.6L 4v	1625-2
SVT Cobra 98 - 4.6L 4v	1625-3
SVT Cobra 98 - 4.6L 4v 1 5/8	1625-6JB
SVT Cobra 99-01 - 4.6L 4v 1 5/8	1625-7JB
SVT Cobra 99-01 4.6L 4v	1625-4
T-Bird/Cougar 89-93 - 5.0L	1645
T-Bird/Cougar 94-97 - 4.6L 2v	1626