As tjkj2002 said, CRD stands for Common Rail Diesel. Jeep (DaimlerChrysler) put a 2.8 common rail diesel in the American released Liberty (KJ) in 2005 and 2006. If you don't know CRD, you most likely don't have one.
The Eibach 1.2 Sport kit will most likely be comprised of nothing more than 4 progressive-rate springs (2 front and 2 rear). I say that because I put Eibach pro kits on my 95 Eagle Talon and my 01 VW Jetta Wolfsburg and that is what came in those kits. I would strongly suggest asking the seller of the Eibach spring kit to suggest (and/or guaranteeing) replacement front struts and rear shocks to go along with the Eibach spring kit.
I can't, for the life of me, find an image of a Liberty with the kit installed. But here's a pict of the kit installed on a PT Cruiser.
Eibach springs are very high quality. I have never had a problem with them in the cars I've put them one. The Sport model springs (the only ones I can find offered for the KJ) are progressive rate, so the initial compression rate is softer, allowing smooth (lowered) everyday driving in the initial stage. The stiffer second stage allows for spirited driving without spring compression compromise. They make very nice springs and even offer a 1 million mile warranty on their parts.
I will warn that Eibach progressive-rate springs are not designed for towing. Progressive-rate springs inherently do poorly in this application. The initial rate on progressive-rate springs is typically too low to handle towed loads. The rear WILL sag. I would suggest finding an air-bag solution for the rear if towing is your primary goal.
I have never installed Eibach springs (or lowering springs) on my Jeep, nor ever shopped them for my Jeep. And I don't know of any that have. So I can only give the suggestions based on what I have done to previously-owned cars. I hope it helps.