I don't know where you live but I odered springs from Benz Springs in Portland, OR for the mini I had. To add 1.5 inches, which is a little more than what the droop was, was only $60 for the set. If you give them your vehicle info and what application you want they will custom build them and send them with all the hardware. I was happy with the product. Benz Forgot the URL. Anyway, they do all of our heavy 5-10 yard stuff and the 1 tons.

1997 T-100 4X4 Xcab,Warn Hubs
02 Camry LE
2008 Yaris