The V8 Commanders came with the 545RFE transmission, that had a Tow-Haul switch in the dash, that changed the shift programming for towing/hauling heavy loads, I guess to prevent overheating the transmission. I believe they all got it.
The V6 Commanders came with the W5A580 transmission that did NOT have any switches in the Dash, although they were rated to tow.
The tow package for the Commander was just the Tow Hitch, Signal Light connectors and slightly higher spring rate rear springs, perhaps different shocks in the rear only. I guess the different springs/shocks were for the tongue weight. To give the Commander a higher tow rating.
The Commander came stock with more than enough cooling for the engine/trans and big enough brakes, that they did NOT need upgrading for the Tow Package.
If you don't have the tow package, you'll have a slightly lower tow rating, check your owner's manual, but still a pretty high tow rating.
And if you wanted the factory tow package, you'd just need to order and install the rear springs/shocks (NOT positive the shocks were different) and install the tow hitch. Wiring up to you, if you want to go through the pain of using the Mopar wiring kit, that they make harder and more expensive to install than a lot of good aftermarket adapter kits out there. Lights aren't going to change the tow rating.