just got back from a 280 mile drive.. speeds ranging from 45 mph to 72... some annoying vibrations around 57 mph which clears up above and below that figure... no smok, no overheating , no A/C ugh !!! tracks really straight down the roa, ,,, very little play in the steering..... going thru constructions zone with the very discernible 3 inch jump between where the asphalt was milled and existing pavement continues,, best said tha, , truck takes the bump/ jump,, and does not come down in the other lane... I think that is clear ?? decent highway ride.... I would get in it and drive to cali no problem-- nice torque at highway speeds.... mash and pass...... previous owner took the 100lbs of stock manifold off and installed a edelbrock with 4 barrel.. seemed to get the usual,,, 10 mpg > 12 mpg --**** extendedmiless made evident the clutch would likely be needing replacement .. hooks up fine,, started chattering abit leaving a ligh, after extended highway use.. by the by,, this is 4wd -2, n-4hi & 4lo on the transfer case- lock out hubs at the front....