20 minutes to install spacers on a 2wd is very optimistic. Since I have no tools or garage overseas, I just had the shop install 2.5 inch spacers( I recommend the 2" or 1.5). On the downside of a speed bump, the front end is fairly harsh. The shop removed a 1/2" plastic pad that may have helped(a little), but now it feels like it really needs shocks on the front. I truly wish Bilstein would offer a 5100 adjustable shock for the 2wd's. After my experience, I believe I will be removing the spacer and installing bilsteins 4600 oem replacement shocks and just dealing with the rake until I get the truck back to the U.S.
FWIW--it looks Badass levelled. But in the land of Frequent and Massive speed bumps, my daily commute is just painful and annoying. Rides like a champ on everything except these frickin' 2 mph humps...actually jarring at any speed over a creep.
I may consider a different method on the lift...or just buy a 4x4 and be done with it.
my 2 cents