The wife's '98 - 5.9 Durango has 285K. Minor issues. Replaceable parts only.
My '03 Dakota with the LA V6 (318 -2 cylinders), 220K. Ditto as above.

The only thing I do not like is the use of standard metal for the brake lines. Replacement line from the dealer or stupid expensive BUT were upgraded in SOME cases to stainless steel.

The cave eat spots are:

Rear axle
Engine compartment, driver side, around the distribution block
AND as the brake lines leave the anti lock module heading backwards and downwards

These are the problem rust areas. Address this before any driving is done.

IMO, the front end parts (aftermarket) wear out a little quickly.
I go through brakes a little fast as well and IMO though my daily commute (3-5 days a week) is 50 miles one way. NYC rush hour traffic can be a little harsh.