Sounds very impressive, Flowmaster actually uses Series 40 mufflers in many of their catbacks for late model cars with V8. Great choice!
Here's their classification in case anybody's looking to build something similar: http://www.carid.com/flowmaster/info/mufflers-types.html
My name is Tim and I am a big fan of old school muscle cars and RoadRunner in particular. Being a mechanic for last 15 years I did have a chance to work on this model and completely fall in love with it.
I currently work at online store and deal with nice performance upgrades everyday. Looking...
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