I have a 2004 PreRunner TRD Off-Road, XtraCab V6. Love the truck...but it rides rough on the street (great off-road!!). Since I drive on the street 99% of the time...I'd like it to ride smoother. Toyota says the TRD has a "modified rear leaf spring suspension." I was wondering if the Standard PreRunner suspension (Non-TRD) rides any softer? Would changing the leaf springs improve the ride or should I change the Bilstein Shocks? Any Suggestions???