You're right. If you want to run big tires and slam it to the ground the Camaro clip will give you fender problems. I only lowered mine a couple of inches mainly because I run the Camaro wheels and tires 245/60-14. I wanted mine to still look like a truck.

http://smg.photobucket.com/albums/v518/Blacktailer/1949%20Chevy/