All take the normal screw in style ball joints. All arms are based on 6" bolt center pattern. If used on other side of car, the offset would be opposite of what is written.
(3) DEI slotted Upper control arms 7 1/2" /7 1/2" / 7 5/8" 6" BC NASCAR
(3) DEI slotted Upper control arms 9" /9 3/4" / 10" 6" BC NASCAR
(3) DEI slotted Upper control arms 8 3/4" /9 1/4" / 9 1/4" 6" BC NASCAR
(3) DEI slotted Upper control arms 8 1/4" /8 1/2" / 8 5/8" 6" BC NASCAR
DEI slotted Upper control arms 9" /9 5/16" / 9 1/4" 6" BC NASCAR
DEI slotted Upper control arms 8 1/8" /7 13/16" / 7 7/8" 6" BC NASCAR
