You mean a FORD v6. I know of gm's mostly any muffler (besides glasspacks, flowmaster 40 series and cherry bombs) dont sound bad. I believe it is the firing order on the car in question is why anything will sound like crap. Just like the way you can tell the difference between a stock. 5.0 with flowmasters and a stock 4.6 with same muffler also.
But gerald, you might be right , that may help it out some.
__________________
|