Modified coil spring covers

Actually, I think the mod was to increase the height of the shock tower mount to help keep the shocks from bottoming out. The Shelby drop shortens the distance the shock is extended and under full compression it has the potential to bottom out, possibly damaging the shock. The idea is to raise the mounting point of the shock to restore it's travel distance. You could also do this with a stack of washers. You would add some washers under the two shock mount bolts to increase their travel. You should be able to add around 1/2" and not interfer with your hood clearance.

Tim

help me out cause I'm having trouble figuring this out...

If you perform the Shelby drop, it lowers your control arm thus further extending the shock.

Why would you want to pull it even closer to full extension?

It compresses your shock more, so moving the upper mount up a tad gives you back full shock travel. It may seem hard to grasp, but dropping the UCA 1" drops the car 3/4" and you lose about 1/2" in shock travel. Having said that, I'd like to say that this is all THEORY. In reality, my car is very, very low and I do not run into problems with either the shock or the snubber, so I doubt any street-driven car would encounter any problems at all.

Actually, the shaft goes down, the ball joint goes up (lowering the car about 5/8"), and the spring and shock stays about the same. Now, if you get 1" lowering springs you should check the compressed length of the shock. I like to use 70-73 suspension bumpers when doing the 'drop'.