I went through this entire process a few months back… her are my results:
Detroit speed lowered front coils …too low. Bought two rubber spacers off the shelf at O’Reilly’s , in the truck section and cut them down to one inch. Installed them on the top of the spring and my ride height was almost perfect. Drove it and didn’t like the “bounce” as it went down the road.
More research and time and $$, I decided on replacing the entire front uppers, lowers, springs and shocks with a Ridetech set up.
I used their strong arm upper and lowers, a Dual rate spring and tunable shocks( FOX). What is nice about this set up, they provide you with .25 in steel spacers to “tune” the ride height without going to coil overs.
Pics of the ride height are with the dual rate ridetech small block springs .