70GS, Yes, I see that there is a 3" muffler with a 20" case that has an offset/center configuration #17793 and a 16" case with an offset/offset both 11" wide and 5.5" high # 17792. I agree the offset/center would not flow as well.
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Jim Moshier
1971 Grand Prix 462ci SD Performance 6x heads
1962 Catalina 389
1968 Firebird 400-455 I haven't decided
"If we ever forget that we're one nation under GOD, then we will be a nation gone under." - Ronald Reagan
Last edited by Jim Moshier; 10-29-2019 at 04:56 PM.
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