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Re: LS swap exhaust too loud.... Options
I had an h pipe on my 67 Firebird and it was very quiet with glasspacks dumped before the rear axle. It still set off car alarms with a very low tone. Tamed those glasspacks though. At high rpms, they did not rap like normal packs. I never liked them but at the time they were free. Subbed for info.
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