Just to let everyone on Stang-net know. I purchased a set of L/T Headers for my 99 Cobra. After spending about two days trying to put the driver side on, I realized the reason it wasn't going on was because the flange was different. So I called up MAC and told them my story, and the 2nd incharge guy told me it was impossible, and that I didn't know what I was doing. I took it to the local high performance exhaust shop, and they confirmed my theory, but MAC also told them they had no idea what they were doing!!! So I finally spoke to a secretary who helped me out, by letting me do a 1-for-1 swap, but I had to send my header in first, (at my expense) to get the new one. Well, almost a month later,(even though they sure liked taking my money quickly) I still don't have my header, and they won't even talk to me!!!!!!!! Just to let all of you know, I have been without my baby for a month this Thursday!!!! This not only sucks, but is costing me alot of money, as my vehicle has been apart at the shop this whole time, when I could have put this on myself, had MAC not screwed me over!!!! Has anyone ever had a problem with MAC? What should I do? My wife and I are thinking of contacting the Better Business Bureau, is this a good course of action. I NEED HELP!!