when I had the huge-cammed 340 in my Duster back in the '90s, it had headers, dual 2 1/2" and walker turbo mufflers.
I watch all these videos hoping to hear something that sounds as good as it did, but it never happens...sorry guys:D
I loved the Walker turbos I had on my 340 (2 1/2 all the way)-sounded great (of course the huge cam was part of that) but wasn't really 'loud'.
At least not 'loud for the sake of being loud' like glasspacks give you.