Had the same happen to me with them. They replaced the cut in half 4 piece H-pipe with a one piece H-pipe and sent a pick-up tag for the "cut in half" pipes. The H-pipe had to have one flange cut off and rolled about 12 degrees for it to fit. I also had ordered tail pipes at the same time. Not even close. They said a mistake was made which was the wrong card was used on the bending machine. They sent a second set of tail pipes, again, not even close and was refunded for the tail pipes. Save yourself the wasted time and aggravation and call Colby at Accurate. I did and ordered a set of tail pipes and they fit like a glove in less than 10 minutes. All the above was for a 1967 GTX. Good luck.
P.S. Classics prices are cheap for a reason...I wouldn`t and can`t ever recommend them to anyone that wants an exhaust system that actually fits. Don`t delay, call them asap to get your money back.