Because of the drive line angle being set at 1 degree down instead of the factory 3 degree, I had a issue with the headpipes hitting the floorboards. Not wanting to disturb the TTI pipes (they are a mandrel bent tuned system) I had the cut the floor board for clearance. The back tail pipes still need some ajustment but I will take care of that when I reset the tabs that are welded on the rear for the upper links. The car is going to sit a full 2 inches lower than it does now ,this is why I set the drive line angle at 1 degree down. I dislike my headers and exhaust pointing downward towards the pavement, and I wanted to gain some exhaust to ground clearance,plus I didnt want to see the exhaust pipes when you look under the car.