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Duotone panel — violet briefing on the left, lime-sealed detail sheet on the right.
450 in Stock Square Port
Square Bore
010" for engines that have been align bored (require reduced center distances)
GM Fullsize SUV 1978-89
No free air calibration requiredCompletely sealed unit for durability in race environmentsBosch 4
QA1 Adjustable Upper Trailing Arms - 64-67 GM A-Body 110015 450 in Stock Square PortAll upper tubular and lower boxed trailing arms use polyurethane bushings on both ends, while upper adjustable and lower tubular trailing arms use a spherical ball or rod end assembly on the chassis end to eliminate bushing bind, allowing the suspension to move smoother for better control. This keeps the tires planted firmly on the ground for improved traction and a more predictable, better handling car. For a long lasting finish, tubular and boxed