I spent most of the day doing a comparison test between my bone stock 2006 Rubicon and this 2003 Rubicon.
The 2006 Rubicon has no lift and is 100% stock with the exception of 265 C rated tires.
The 2003 is heavily modified and has 35" Nitto M/T tires on TrailReady beadlock wheels.
The 2006 has the NSG370, and my 2003 has the NV3550.
I drove them both back-to-back, both at speeds up to 80 MPH on the highway for sustained periods of time, and both during stop-and-go in city driving.
I've come to the conclusion after having done this test that even with all of the modifications done to the 2003 (including the mid-arm, wheels, tires, etc.), it handles just as good, if not better than my bone stock 2006.
The only place where I felt any discernible difference was at higher speeds on the highway, where the wind (it was a very windy day) wants to go under the 2003 (being as though it's so tall) and sort of push you around, versus on the bone stock 2006, it does a bit better since it's much lower.
Of course the 2003 is a bit more sluggish off the line due to the heavier wheels and tires, but that is to be expected.
At one point I took them both through some pretty fast corners, and I can honestly say that the 2003 has no more body roll than the stock TJ, not that I picked up on at least. In fact, at one point I was whipping the back ends around as best I could, and I actually felt more planted in the modified Rubicon as oppose to the stock one.
Keep in mind that I currently do not have outboard shocks, just the Savvy tuned Fox shocks. It would be interesting to see what difference the outboards make.
I can now honestly say with a real comparison test that I'm 100% confident that the Savvy mid-arm does not affect on-road driving performance whatsoever. In fact, one might argue that it makes it even better.
I'm very, very impressed with the way this thing performs on-road, especially when pitted against a bone stock TJ.
The question is, how much more will I like it with the outboard shocks and PSC setup?