I wanted to raise the rear up a half inch. No one likes a saggy ass, plus it was lower than the front. Having owned older Mustangs I initially looked for MM Iso's but no luck on an S550. I did come across Steeda's Spring Spacers. So I ordered the 1/4" spacers which is said to give me 1/2" lift. Install was about 30 minutes each side and very very easy, 7 bolts actually. You can see the difference between the two. Not a huge change which left me wondering if the if the 3/4" spacer would have been perfect or wanting me to drop it back down a little. Currently happy with the outcome. -Shane
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