Carmine
The pipes you are refering to were designed by Ron Roberts and previously marketed through Buckshot. The same pipes are now marked through
www.fireflyperformance.com You can see the pipes, options and prices at the new web site.
I have these pipes with a 3" mufflers on my car. No rattles, they look fantastic and I picked up 40+ HP with my 514. You can see my dyno sheet at the Firefly web site
Give me a shout if you have any more questions
Craig
craigayl@comcast.net