All I can say is if you have the opportunity to purchase this, DO IT. The car handles beautifully with no other modifications. When I first installed it, it was on stock struts/springs, and I used the end setting. Once I got Racing Beat Springs, the effect was reduced a bit, but I think I just need to move the end links to the middle position. You'll need a medium/deep socket set to get the end links off without screwing up the nut too much (Grade 8 nut, 10mm, fine thread. Doesn't exist except at Mazda for 4 bucks). Other than that, I just backed my car out over the edge of the driveway (not as bad as it sounds, just the bumper was hanging out over the edge) and was able to install the whole thing that way. The hardest thing is to get the bushing bolts on and off (the crossmember and OEM sway bar are in the way)