A summary of what I think the five best truck mods are that you can do, if they didn't come stock on your 1/2 ton, 3/4 ton, or 1 ton pickup truck.

Firestone Ride Rite Air Bags
https://www.amazon.com/gp/product/B00...

TRD Sway Bar
https://www.amazon.com/gp/product/B00...

Hellwig Rear Sway bar
https://www.hellwigproducts.com/produ...

Alpine Halo9 ilx
https://www.crutchfield.com/p_500ILXF...

Snap on Tow Mirror
https://www.amazon.com/gp/product/B00...