2" duals provides 6.3 inch2 of flow area...that is more than a 2.5" single (4.9 inch2), more than a 2.75" single (5.9 inch2) and almost as much as a 3" single (7.0 inch2)...I would think this is plenty for ANY N/A 2.5L, probably most if not all but the most extreme N/A 3.0Ls. FI applications may benefit from bigger but that's about it....
None of the 2.5" catbacks (CTA, Brullen) make more power than the 2.25" Bassani (make about the same) on the 2.5L thats at least mild/moderately modded....
SHO Shops aftermarket pipe for a 3L SHO is 2.5 and some of them are at 265 FWHP with this 2.5" single....
Just my 0.2..I think custom mandrel true duals is a great CDW27 open market niche,,go for it!
