Don't order the $139 A/C compressor that Autozone has listed for the 300SDL; it's not the correct part. Expect to pay $450+ for the right one from Autozone! Get it from Rusty instead. Fortunately, the Autozone compressor clutch _is_ the correct part, and it's available for under $100. It's a PITA to install, but it sure beats having to open and recharge the system if the clutch is the only thing that's gone bad. Funny how these things fail on the hottest day of the year.
-brian
