Whats the deal with the Dr. Gas X-pipe (for longtubes) that goes from 3'' to 2 1/2'', is there a noticable sound/power difference than the regular 2 1/2'' x-pipe? It cost a bunch more, is it worth it?
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1990 Notchback: BBK Ceramic Coated Full length headers, Dr. Gas 3"- 2 1/2" x-pipe, Flowmaster 40's/turndowns.
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