UMI Performance 68-72 GM A-Body Adjustable Upper & Lower Control Arm Kit Exhaust- Mufflers & Tips>Connecting Pipes Low air intake temperatures are

Low air intake temperatures are vital for maximum power output

Straight forward on-car adjustability makes for quick and accurate work at the alignment shop or when doing your own alignment and setup work

50-state legal Cat Back design (perfect tone with all catalysts intact

Exhaust kit 15734 features a cat-back layout that replaces your ride's stock exhaust components from near the catalytic converter on back

Driver confidence and enjoyment are enhanced to a new level on the road and on the track

UMI Performance 68-72 GM A-Body Adjustable Upper & Lower Control Arm Kit Exhaust- Mufflers & Tips>Connecting Pipes Low air intake temperatures areThis kit includes (1) set of our tubular single adjustable lower control arms and (1) set of our on car adjustable upper control arms, "Ultimate Arms". Both items are direct replacements of the OEM set up adding strength, ride improvement and most importantly, rear end adjustment. For more information please click on each items link below. Kit Includes: 1 Set Tubular Lower Control Arms Item # 4014 1 Set Adjustable Upper Control Arms Item # 4017