Guys with SS springs, which ones did you use?

Just picked up my 2800 lb SS springs (P4120863 and P4120864) this afternoon from the dealer. $110.00 Canadian each ($129 list, $110 net) and no shipping! Have to wait until spring to install them though. :(

Mild hijack: The SS springs came with bushings installed in the front but nothing in the rear. What do I need when it comes time to put these on the car?