Hi, My 2002 Liberty needs its rocker panels replaced (is this the thing under each door that goes from a fender to another?). Any suggestion where I could shop for these?

Thanks.

 

Yes, And you probably can go to your dealer and have him put new ones on and charge you though the nose..or go to your local steel company and buy some boxed steel and make some rockrail (as they would be called now) and once measured and fitted you can either weld them onto the good part under the doors or use sheet metal screws to attach it (as I did when I had my 89 xj)
I hope yu have done something by now. I see the date on your question has been awhile without a reply