Manual shift transfer case was standard on most trucks with 40/20/40 seating in front. ESOF is mandatory with captains chair seating arrangement like I have on mine. Sounds like it'll be a fine truck. I bought an SCT x3 programmer with custom tunes for my truck and the driveability is really improved. There is no more hesitation when I mash the throttle and it shifts so much better. I can't say fuel mileage increased any, but driveability sure made the purchase worth the expense. I also have 3.55 L/S and even with those gears it pulls my enclosed 20' car trailer just fine. I get slightly better mileage than I did with my 05 PSD empty and within 1 mpg towing of the diesel. The only other area you may have problems with are the power window switches. I've had to replace them once in both front doors.