I have one on my 70 Charger, 3-1/2" that I made myself along with the entire 3-1/2" exhaust to the mufflers then reduced down to 3" up over the axle thru the stock tips with the reducer cut off. I can't tell you if it makes any more power or not but I always get compliments on how good my car sounds & looks mostly stock.


1963 Belvedere 440 Max Wedge Tribute
1970 Charger R/T S.E. 440 Six Pack
1970 Challenger R/T, 528 Hemi
1970 Charger 500 S.E. 440 4 BBL
1970 Plymouth Road Runner 383
1974 Chrysler New Yorker 440
1996 2500 RAM 488 V-10 4X4
2004 3500 Dually Cummins 4x4
2012 Challenger R/T Classic.