I would recommend a glasspack. I removed the center muffler on the 84 4kq leaving the stock rear Leistritz, and it was quite loud. The Supertrapp will be unbearable - I think Stott can vouch for that (and Chris Semple) -- Dan Simoes dans@ans.net ANS Communications http://coimbra.ans.net/dans.html 100 Manhattanville Road (914) 701-5378 (voice) Purchase, NY 10577 (914) 701-5310 (fax)