Out of dozens of mufflers I have heard, the Mac's sound the best in my opinion. They make setting off car alarms a sport. They are not loud below 3k and produce an awsome idle sound.
I think they will be a little loud on my 550 hp 408. I'll keep them and decide when the engines in.
That "pipe" is accually a muffler. It has one inside the pipe.
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-1993 Mustang, 900rwhp 03-04 cobra based 4v swap, full Griggs setup, project underway
-1994 Ranger w/ 427cid windsor (daily beater)
check it out!
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