Originally Posted by BrianBrave

It's really a fine line to walk. The shock bumpers help reduce body roll when turning at speeds. So if you trim less spring, trim less bumper.

With your car sitting at the factory level, scribe a mark on the lower portion of the shock where the lower portion of dust cover sits.

Once you trim your springs and put back in and have the SRT sitting on the ground, make a another mark, the difference between the two marks will give you guidance on how much of the bump stop to trim.

Here is a picture I took sometime back. I did not do this at first and on hard bumps the shock would hit the bump stop instead of traveling a bit further.

BTW - Eibach tells you do this same exact thing. Lowering is lowering. The shocks are a breeze to R&R.