I can confirm that...I have a Dual N1 on my 89 and my buddy has a single N1 on his 90. Mine is much higher (closer to car) than his. BUT I have hit mine a few times. Usually on really really steep ramps (stupid Wendy's) and once on a manhole during construction. But my car was lowered at the time w/sportline springs. Otherwise, no problems at all.
On the other hand my buddy is always scraping things...if he's in front of me i can see it and when he's behind me i can hear it.
