Detroit Speed's front frame is a bolt-in replacement for the original stock subframe. It improves the handling and ride quality by utilizing Detroit Speed's unique suspension geometry. It is the ONLY Chevy II frame in the aftermarket industry with OEM quality stamped crossmembers for improved structural rigidity. The bay bars feature rigid integral hood hinge mounting and are hidden when used with Detroit Speed's Chevy II Inner Fenders package. Spring Rate: 400 lbs/in Spring Free Length: 10 in Remote Canister Monotube Double Adjustable Shock: This DSE/JRi shock has all of the qualities of the double adjustable shock and incorporates a gas charged bladder to provide high frequency and low speed dampening control. Remote Canister Shock Mounts: These billet aluminum shock mounts are manufactured for securing your remote shock canisters to the vehicle. The shocks mount with two 1/4"-20 x 1/2" button head screws. *Sold Separately* SBC and LS engines have been designed as a direct bolt-in to this frame. The Detroit Speed frame has been designed, engineered, and developed for the road and track. This frame blends the benefits of current OEM technology and aftermarket performance into one product! The frame is sold in bare metal, uncoated and unassembled. If the powder coat option is purchased, assembly is included.