zcookie,
By robust, I am talking about the heavier frame, suspension, much more H.D. drivetrain, and more torque that comes with the Cummin$ option. By ordering the camper package on my '01/2500, I got the 1 ton frame, one ton suspension (actually the first SRW one ton in name only as it had all the springs/anti sway bars that came with a one ton dually). The only difference were the 4" hub extensions for the deep dual rear wheel backspacing, and a slightly narrower rr Dana 80 (35 spline. added Power Lok L.S. diff) for the SRW. The DRW had a WIDER rr axle to compensate for the backspacing and clearance on the rr disc brakes (new in 2001.5) AFA the drivetrain: with the use of the new at the time cast iron NV5600 (26K pound rating, weighs 360 pounds, dry) 6 speed manual, the Cummins was upgraded in TQ ad HP (245HP; 505TQ) (as opposed to downgraded in power for the automatics of the time) because the trans could take it. The t. case is the NV241HD. What's the HD? It's for snow plow work and has a much wider chain to absorb the shock loading you get when plowing. The front axle is a 35 spline, Dana 60 with upgraded after market 35 spline Dana 70 free spin kit, and locking hubs. Next week I will install a Detroit Eaton True Trac, gear driven L.S. center section for that axle.
To the factory 4 spring pack(probably the one you have) + one upper overload spring I added two more upper overload springs; one more bottom lift spring and Stable Loads. Also I recently rebuilt all the anti sway bar rubber and Rancho 9K's. The front end has been gone through with a 3" lift; Gen4 pan hard rod and many upgrade steering parts including a front frame stiffener around the steering box. The truck is very tight again. Remember this is to carry one of the lightest hard sides around.
I upgraded the rear wheels/tires to super singles or duplex status. The tires are 33x15.50's on 12" wide aluminum rims for driving over soft ground or even sand dunes.
So, more or less, this is what I mean by more robust compared to a gasser 2500 of the same Gen2 era.
regards, as always, jefe
'01.5 Dodge 2500 4x4, CTD, Qcab, SB, NV5600, 241HD, 4.10's, Dana 70/TruTrac; Dana 80/ TruTrac, Spintec hub conversion, H.D. susp, 315/75R16's on 7.5" and 10" wide steel wheels, Vulcan big line, Warn M15K winch '98 Lance Lite 165s, 8' 6" X-cab, 200w Solar