Running around empty the front axle is 5K +/- and the rear axle is 3K +/-, why would you want 65 in both ends????? Look at the inflation chart I posted. My Transforce AT were fine regrading ride and handle, they just wore out in less than 30K miles.
To the OP, set your rears to 42 PSI and go for a test drive!
Your tire nanny will bark at you, there are ways to reprogram it with a little interweb searching. A test drive will tell you if you want to go through that effort.
2500's have the tire nanny, 3500's have a screen available in the EVIC that shows tire pressure and NO nanny!