408 going in

Like Fred said, every car is different. A lot of the B body guys said they were hitting in places too. I just installed mine and they fit like a charm. Didn't even have to loosen an engine mount to slide them in. I did, however, have trouble getting the correct parts when I ordered them. But that was Mancinis fault, not TTI. Mancini forgot to give instructions to weld in the bung before it went off to get ceramic coating, then they sent 2.5" collectors instead of 3", then I called Mancini to see when they were shipping because I was leaving town for a week. They said they weren't ready yet but then they showed up and sat on my front porch for a week in the rain. Not a good place to leave a $1000 pair of headers. TTI was more than great. I would only deal with them directly.