1999 Honda Civic: Koni Adjustable Rear Shocks with EM1 Si Springs 

This video details how to remove your oem rear shocks and springs. I replaced the worn suspension components with new ride height adjustable Koni Shocks and low mileage (minty fresh!) EM1 Si springs. Also replaced were the shock bump stops, boots, mounts and bushings.
With the springs on the lowest Koni perch, the overall drop in ride height measures .75” after settling on the car for roughly 6 months and 5k miles.
Torque Specs
Rear Upper Control Arms: 29 lb-ft
Rear Lower Shock Bolt: 40 lb-ft
Rear Upper Shock Mount Flange Nuts: 36 lb-ft
Top Shock Nut: 22 lb-ft
End-link Flange Nut: 22lb-ft
Wheel Lug Nuts: 80 lb-ft
Parts
Rear Shocks 2x Koni Sport Yellow Adjustable: 8041 1213SPORT
Rear Springs 2x OEM 99 Si, 10k miles
KYB Boots and Bump Stops 2x: KYB SB108
KYB Shock Mount 2x: KYB SM5516
KYB Shock Mount Bushings 2x: KYB SM5058