I had an '00 R/T that I put 160,000 miles on in the 8 years I had it. I changed oil every 10K and serviced the trans every 30,000. Only trans issue I had was a broken clip that held the boost valve in.

Did the heater core at 160K. Water pump at 150K, A/C compressor at 170K. Other than that it was fairly bulletproof.

Daily drove it, pulled race car trailer, hauled tons of stuff in it, and drag raced it. 39K when I bought it, over 200K when I sold it still running strong.