Pick-a-part junk yard?

 

If it's the rear cab mount, I believe Toyota has a new part available that was part of the bed bounce TSB - replaces the stock urethane bushing with a hydraulic unit. Both rear body mounts usually run $200 at the dealer just for parts. Ask the dealer if they are going to replace both of them with the newer, hydraulic units; if yes, they are basically charging you for parts which is a steal for you! That is, of course, assuming that you are out of the TSB warranty period.