rear suspension lift

I had springs re-arched and they held up...but that only works if they are made of good quality spring steel. The same goes for new springs. I bought Espo springs. Some say theirs sagged over time but mine never did. If you get yours
re-arched they will try to do them one at a time to extend their hourly rate. I insisted they arch mine assembled one side first and then the other side to match it. Took about a half hour.