Terry, it's not the 2.0 gear sets that make them last. I have customers with trucks showing well over 200,000 miles, with 4.10 gears, and still use no oil & run like new. One of my heros, Bennie Osborn (Used to run Top Fuel) made a real good living over hauling 100,000 mile Chevy pickups. Cleaner running and less oil contamination with EFI is a big contributor to that.
Thankfully, Bennie has retired. He would be like the Maytag repairman now.