I installed the ROW M030 Sport Suspension on my '99 three years ago and, although it wasn't lowered that much, it was lowered enough to scrape on some driveways and speed bumps. I just slow down and approach from an angle if possible to avoid scraping the from underside, but since no one sees it I'm not all bothered by a few scrapes underneath. If you really are bothered by it there is a metal protector that is made to install under the front and take the scrapes. As I recall Auto Atlanta, Pelican and Suncoast used to sell one. You might also try eBay but expect to pay $200+ for one.
