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NOW AVAILABLE, THIS C10 SQUARE BODY SUSPENSION UPGRADE FOR ALL FOUR CORNERS OF YOUR SQUARE BODY PICKUP HAS AN ALL-NEW TORQUE ARM DESIGN FOR THE 1973-1987 CHEVY C10. With these all-new, engineered from-scratch systems, truck owners can add modern performance to a pickup that was originally designed for utility, all without needing to remove the bed of the truck, although it is recommended for an easier process. QA1 engineered this unique bolt-in torque arm design which maximizes performance without the inherent binding issues of other four-link systems.