The best way to get the closest spring you need for your specific application is to drive the truck to a grain scale (or in my city they leave the scale on all night at the recycling facility). Since you are going to buy springs for your truck you might as well get the right ones for your application.

What you want to do is weigh just the front wheels, just the back wheels, and maybe the side wheels to get a split of the weight of your truck. Once you have this the engineers at the Eaton spring tech line will thank you for having this information ready for them, they should be able to get you the right spring for your application.

It is possible it's just another bad spring or it could've been overloaded also.

If you don't have a scale like that round find a race car shop a lot of times they will have scales to tell you your weight of your truck.

Some people say I suffer from insanity, in reality, I enjoy every minute of it!