My VX was used as the prototype at Calmini and I used there lift for a few years....

At one time they did have an issue with the rear springs popping out...due to longer rear shocks...I beleive they have fixed the issue...???

I now run 919 springs and 2" ball joint spacers and a 2"diff drop and have nearly 5" of lift when unloaded....and am currently running 35s