You can run 33's with a leveling kit. THere is only one way to go if you want to run spacers and that's with EZ-Lift Suspension Systems. They designed the original spacers. Their spacers set on top of your coilover or coils so you don't have to disassemble your struts and preload the coils. Your rig will maintain its original ride characteristics. Once they patented their design the other companies like Daystar came up with their split spacer designs. EZ lifts are quite affordable too.
EZ-Lift Suspension Systems