If you were building a restomod which modern improvements would you add?

[Sovereign]

Why would you want a winch on a 2wd?

If lowering is in the cards, 4 link rear from DSE, No Limit, or Ride Tech among others. From suspension from DSE if you really want to make the truck handle. If you just want improved handling, what TrailerTrash recommends above is a great path. I would add frame bracing in there, too. I'm a huge proponent of bracing chassis if you desire improved handling.

Better headlights should be considered. Upgrading the wiring so it's safer and provides better power to the power components.

If more power is wanted out of the engine, LS swap with high flow cats. There is zero reason to remove catalytic converters from a modern engine.

Better brakes preferably from a later generation truck so you can get new pads or calipers later without issue. Baer makes brakes that use factory pads from other cars so keep that in mind, too.

Good luck with whatever you decide.