Why do all of you replace springs? Do your springs waste away due to rust, or don't you have spring works? We have spring works everywhere, quite a few in large cities.
These people will re temper your old springs to as new spring rate, & reset them higher, or lower to your choice.
I can take a car, [or truck ETC.] to our local spring maker, tell them how much higher or lower I want it to sit, & pick it up 5 hours later set to what I ordered.
They will do the same, supplying springs at any percentage stiffer I request.
Hasbeen