I'm not sure if you're looking to purchase immediately, but if so we've got an overstock Mackin MXP exhaust. I could get you a great deal on it.
If you're not looking to buy immediately, or are really set on the FI, it's usually the flanges that hit the ground 1st from what I've heard. You may be able to grind them down a little, but it's not going to help you get any lower. It'll just minimize the chance of it hitting the ground.
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