what kind of tire size?.... I realize its a diesel and has lots of torque to spare but if its got oversize tires.... depending on the size they will put additional stress on that auto tranny since the gearing and shiftpoints will be off without correcting the gears (which he would not need to reprogram the speedo for if he had done it)
just something to keep in mind...

 

Oooooh..... that's sharp. I want one!

 

It has 35's. He did not change gearing. I still bought it and closed the deal today. Now I need to sell my 1500!
Here are some pics.

 

Nice truck! The 47re should be fine, even with 35's on stock gears. Just be nice to it

 

To be honest, I am not a rodder. I usually cruise. Repairs are too expensive on any vehicle.
Only reason I bought it was to get up hills a little easier and to go a little farther distance using a little less fuel. I will be pulling about 9k max.
It does have a block 53 but does not have any cracks. Dealer checked it all out during service and I thumbnailed it last night.
I guess it's a crap shoot with a 53 but as with any tow vehicle, (Gasoline or diesel) you want to warm them up good before pulling a load.
Wife loves driving it. Steering is tight. I don't know if I will get to drive it though!

 

I would think that, since you are keeping it stock, and not a pedal-stomper, you will probably get many many miles out of the truck, even with the 53 block.