You guys are filled with nostalgia.
The 8.1 was a great engine, so was the 7.3 PSD and the LBZ Duramax. THey were very reliable platforms.
Nevertheless I don't think they compare to the current motors in terms of performance and towing experience. It's nice to reminisce, but when it comes time to buy give me a modern engine with all the power and the multi gear trannies. OEM exhaust brakes make a difference as well.
Those old engines you guys are remembering were mere stepping stone to today's monsters. ...and just when we want to complain about all the emissions stuff remember the air is a lot cleaner and we are RV'ing well into our 80's as a result of the cleaner air and the emissions standards and equipment.
For you football fans:
John Unitas was an immortal QB for the Baltimore Colts however he didn't possess the athleticism of Lamar Jackson. (GO Ravens)
I don't want John Unitas era players to face the Titans this weekend and I don't want to tow with a 4 speed drivetrain or use a truck without an exhaust brake either!