Taking it to the next level! The ALL NEW Hi-Performance coil over suspension kitfor the 1973-87 Chevy C10 and GMC C15 truck is far superior inhandling and performance. Our “new” designtubular uppercontrol arms incorporates heim joint adjustability which vastlyimproves front endgeometry. The new lower tubular arms include 3 lower shock positions to tailor your suspension for all driving styles. Frame plate offers 2 upper shock positions to dial in your suspension.All newAldan Phantom Seriessingle or double adjustable coilovers deliver superior handling andride quality for a drastic improvement over stock suspension. Aldans high tensile coil springs are designed as a direct fit and true stand alone coil over suspension. Ride height adjustable shock saddle allowadjustment up to 2.0″ drop. Entire system is “Bolt On” or you can choose to also weld the frame plates in place. Requires Rack & Pinion Steering (See Suggested Parts) – Not Compatible with gear box. Made in the USA!