6" Rear Drop Flip Kit C-Notch & Extender For Chevy GMC C1500 2WD 1988-1998. 2x Shock extender bracket. Type: shock relocation brackets. Shock absorber extensions are designed to be used with factory shocks on the vehicle with 3-5.5" lowered to reduce extending pistons so that your factory shocks can be reused without compromising ride quality.