Yes he is! Very nice guy. Got the 6.0L muffler on my 383 and man at the difference. I haven't drove it yet but just cranking it up....there's a huge difference in sound. Its a lot deeper than the 5.3 muffler. The 6.0's case is an inch longer as well. I couldn't believe how much it killed the rasp on the 5.3s muffler. For though who didn't read above...I went from 5.3 Sport to 6.0 Sport.

 

Ha, that's funny. I just spoke to him today. He was extremely helpful.