EX's (or EXR's for the canucks) come with rear swaybar, about the thickness of a paperclip. so for EX owners, it's a simple swap-n-bolt on process.

for some LX/DX owners, they came with EX trailing arms (only difference is that there's a pre-drilled hole for the rear swaybar). but most LX/DX trailing arms don't have the hole pre-drilled so that's the one modification/arm that needs to be done.