yes, the rear slider is glued in with urethane that will need to be cut out with wire. be careful, as it's really easy to accidentally cut into the B-pillar trim or even the sheetmetal of the body. the new one I bought came with a roll of glue for it.
the CRL is the only option out there, so if you shop around on amazon you might be able to score a better price.
be prepared to deal with some surface rust under the urethane. it must be properly treated for the new urethane to adhere properly.