01 Skid into a REV
They are not the same, the ZX is narrower. Not saying you can't make it fit, with special spacers, longer bolts and possibly a different rear mount. The big one is to match the bolt spacing, that the skid was originally mounted in. This is important to keep the skid from binding thru various motions.
If you're interested, I've got a rear suspension from an 07 Summit. It's complete, except for rails (unless you want 144 rails)(which actually fits well in a Renegade, without any tunnel extension). The suspension is very reasonable, PM me if interested.
Thanks and Good Luck.