Okay, I looked and found that I only have the kind of extensions that connect to the bump stop cups. I would not recommend these and I'll most likely just throw them away now that I've found them again. I also have 1" front extensions but nothing for the rear. Needless to say, they will be too short for your needs. Before you buy anything, may I recommend you give Havoc Offroad a look? They are a new advertiser here, should be willing to price match if nothing else and they do have a discount code.
http://wayalife.com/showthread.php?38235-A-Little-About-Havoc-Offroad-amp-WAYALIFE-Discount-Code!
If you can't find what you're looking for there, Amazon has great deals too.