Answer: This depends on many factors.

• Do you need an offset muffler?
  This is where your inlet/outlet pipes are located in relation to the muffler.
  
  
• Do you want a stainless steel or aluminized muffler?
  The main difference between the two is the outer shell of the mufflers. Stainless steel mufflers have a polished stainless steel shell and are 100% stainless construction. Stainless steel is more durable then aluminum. Nothing looks better or lasts longer than stainless steel. The aluminized mufflers have stainless internals and necks but have an aluminized outer shell. Also, the aluminized steel has only a protective coating that, if scratched off, may rust. Both mufflers have identical internal construction and materials and both offer you a lifetime warranty and will give you that Straight-through Wide Open Performance with no restrictions. No restrictions equals better flow, and better flow equals more horsepower.
  
  
• Sound of the mufflers?
  The bigger the muffler, the quieter the exhaust.
  
  

If you didn't find the answers you needed on this page, please send your questions to us at: muffler@magnaflow.com, or call our Tech Line @ (800) 817-3930 and one of our MagnaFlow tech staff will help you.