I would say yes. It is quite a difference. It makes the VX accelerate amazingly well for having larger tires. And I just got 17mpg my last road trip this last weekend. Best ever after the lift and tires and all. Maybe has to do with all new pulleys on the engine haha :-)
I know the difference is good with the VX (going from 4.30s to 4.77s) but I am talking about going from 4.54s to 4.77s with my Trooper.