Cherokee exhaust repair?

Hey all... I'm thinking it's getting close to where the mufflers in my Cherokee 180 could stand
to be repaired/replaced. Any thoughts on a good place to have it done? This is the dual-muffler style
as is on the clamshell-cowled later -180's.

Also, I'd be interested to find out if there's any way to get a certified muffler that doesn't
have the internal baffles. The recurrent inspection is kinda a pain, and I could use a little more power
that a freer-flowing exhaust might provide. I know some planes (like my friend's PA-24-250) has a
muffler without internal baffles.... it'd be nice to do the same.

Thanks,
-Cory

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* Cory Papenfuss, Ph.D., PPSEL-IA *
* Electrical Engineering *
* Virginia Polytechnic Institute and State University *
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