Suspension upgrade

Hello everyone. I am a self employed carpenter working out of a 2017 access cab utility 2wd Taco. it has a camper shell with a toolbox dedicated from the factory. truck was originally an Orkin man truck. They usually sell them right before they get 100,000 miles on them. Been a great little truck however I need to beef up this suspension a little bit on the count of the payload. I’ve got Lumber racks on top of the shell and when loaded down I can tell it’s in a little bit of a burden. Looking for suggestions on a simple cheap suspension add-on that will increase the payload

 

Cheaper and easiest option.
https://www.hellwigproducts.com/product-list/helper-springs/

The advantage is that it does not lift the truck just adds support with heavier loads. A few different options available.

 

OMG...someone wanting to upgrade their suspension for actual functional reasons vs just looking cool in the grocery store parking lot. I love it!