According to which glass pack it is. Some are designed to "blow out" pretty quickly making them really good to put on cars with headers with full length pipes. Once "blown out" they have a really nice rumble to them and a LOT less back pressure. Cherry Bombs comes to mind as one of those. Some are actually pretty quiet till blown out. That 6 of yours probably doesn't see a lot of higher RPM's use so a glass pack may be just the ticket. The Hemi in my truck, although it rarely see's high RPM's, creates a fairly high volume of exhaust pressure at normal RPM's so they wouldn't be a good fit on her. Even with stepped baffling she has a good little "rumble" to her. Me likey that though
