i put the oem spoiler on my base without the "shocks/springs" when the car is level the trunk stays open by itself, it doesnt fall down on your head or anything, but it doesn't lift itself open when you flip the trunk release, but if they are only like 20-30 then i would totally do it, might still do it, but i alsoi heard that you need a special tool to install those springs/shocks.... but not sure.