1st Gen suspension noob: when/what to change 190k miles

My taco is approaching 190k miles. The suspension is all original. The truck is leaning on the passenger-rear side. Looking at the leafs, it appears the right one is possibly failing?

This is a 2wd taco and I don't need any upgraded suspension for off roading and I plan to keep the suspension height stock.

What are some good leafs and shocks to get? What else do I need to replace which changing the leafs and rear shocks - shackles, do I need to get new bushings separately or do they come with the leafs?

If I'm doing the rear suspension, should I also do the front as well? If so, what would you all suggest as the replacement brand materials?

Thanks.

 

With 190k plus, I'd take some time to do a good visual inspect of the rear and look to see if anything looks bad. No broken leafs, right? Shocks leaking? Since you don't want to change ride height, why not start with replacing your shocks? If nothing has been changed and you are sitting at 190k, im sure they need to go.

What makes you think the passenger side leaf is failing? Because of the lean? Post up some pics of that along with the rest of the suspension front/back and I'm sure you'll receive some feedback.

This isn't the vendor I would necessarily order from but they show multiple manufacturers and give you a ballpark cost... just to give you an idea on shocks.

https://www.shockwarehouse.com/index.cfm?mode=results&selected_model=4503&selected_year=2001

If I were you, since you have no interest in changing ride height, just look at the Bilstein 4600 series shocks front and back.