Drill Jig for Upper Control Arm, 1" Drop, 3.75" Pattern (Mustang 64-66, Ford/Mercury 60-66)

Upper Control Arm 1" Offset Drill Jig - Fits 1964-66 Mustang and various Ford/Mercury models from 1960-66 - Used to relocate upper arm mounting holes down 1" and back 1/8" to improve negative camber gain and positive caster suspension geometry. Suitable for OEM upper control arms or TCP upper arms with straight pivot shafts.