OP here. I know you are breathless with anticipation about what happened.
We tried out the GM 2500 gasser and, coming from the Tundra with 400 HP and 4.3 gears, we were disappointed. I'm sure it is a fine towing vehicle but not enough, well, fun factor.
Then we tried out the Duramax diesel 2500. Wow. Plenty of power and zip and growl, amazingly quiet, and excellent ride. Picked it up today (2019), and after leaving it in the drive long enough for the neighbors to be impressed it is now safely in the garage and I'm studying the manual. They had a sale on below invoice but it still cost well more than our first house.
Now to respond the several questions:
WHY NOT JUST RUN THE TUNDRA OVERLOADED - did this for awhile and the Tundra does just fine 500# over. But, became increasingly concerned that insurance might deny a big claim because we are breaking the law in this state, and ins policy specifically calls out exclusion for claims during criminal acts. I don't know about the probability of this happening, but without question they have legal right to deny the claim. Getting more cautious in my old age.
HOW ABOUT FORD/DODGE GASSER WITH MORE HP/LOWER RATIOS? Have 2 friends that have owned ford and chevy 2500's in past 5 years and they both talk about how bad the Ford rides and how much better the chevy rides. Even Consumer Reports recent review of the 3 pointed out how much better the Chevy rides compared to ford/Dodge. Plus, my dad and his brothers would climb out of their graves and give me a good kick if I bought a Dodge --- family honor and all.
This has been a really good discussion and I appreciate your comments. Your input truly had some impact on me and our decision.
Happy Turkey Day!