Raceland has the exact same kit, for 100 bucks less. Your rear should not need to be adjusted unless you have bent the axle already, and are currently experiencing uneven tire wear.
By the way, it doesn't take much to knock these rear beams out of whack.
If you haven't purchased your coil overs yet you may want to consider buying my Eibach stainless set. I am upgrading to Bilstein PSS9's real soon. The Eibachs only have a few thousand miles on them and are in perfect condition. I paid 1100 for them Id take 650 shipped.
Also I didn't have to do any adjustments other than a regular alignment.