S Super Shredder Member : 2007 Black MS6GT Oct 30, 2009 #1 what is the maximum dimension of a muffler fitting for the speed6. the magnaflow 2.5 system uses a 4x9 oval 20 inch muffler. how much bigger can you go?
what is the maximum dimension of a muffler fitting for the speed6. the magnaflow 2.5 system uses a 4x9 oval 20 inch muffler. how much bigger can you go?
C coyfish Member Oct 30, 2009 #2 Are you going custom ??? You can fit some pretty huge mufflers in there.
S Super Shredder Member : 2007 Black MS6GT Nov 4, 2009 #4 i just bought the same size they use on the 2.5 kit just with 3/3'' inlet outlet
