if anything in real life holds true, there should be some fairly important differences between years. aside from horsepower differences, the 94+ should be quite a bit more rigid than the earlier cars thanks to alot of chassis/suspension bracing mazda added, and stiffer again in 99'. it shouldnt show in game, but the drivelines are beefier in the 94+ models. you guys should try driving the car on stock suspension with good tires. you will be supprised at how well it acctually sticks to the ground. im personally hard pressed to squeeze too much more time out of the car with suspension improvements. that said i need to spend more time at it. but there are alot of reasons why your typical tune ups (more spring rate, less suspension travel, and huge swaybars) shouldnt hold much warrent on this car. mainly because the car was properly setup in stock form. albiet at speed less chassis roll would arguably be better, but this stands to reason that more caution and effort must be applied to properly tune these things. if its any help mazda sells the Spec Miata suspension kits that run 700lb front springs and 325lb rear. i have no idea what the acctual swaybar diameter is, but from what i understand theres alot of front, and not so much rear. this is mearly a suggestion for a starting point. that package is meant for a fairly low HP car.