Installed mine this morning in about 1.5 hours! Cleaning the stock parts was the biggest time taker. Easy job...
So far I love them... Only have about 1 mile of use on them though.

Buffy, I have the exact setup you have, lift-wise and height measurement-wise. I see now what you mean about needing to take out the springiness.
How did you do so? Are you talking about re-indexing?