The 3.4 is an amazing engine. At 300K it does not burn any oil. I’ve only done regular maintenance. I did have some framework done on the cross member above the exhaust. Rest of frame is solid. What a great truck!
Curious thing I found the other day was a mileage calculator based on tire size changes. IIRC going up 1" in tire size lowers the odometer reading by 10% for a 265/75/r16 from stock. So my odometer reads 225K but in reality my truck is at about 250K.
Random but I found it interesting.