Looking for Good Exhaust Mechanic In Los Angeles

Hi,

New member here, had my 1972 240Z since '95.

Had the engine rebuilt a few years ago with a honkin exhaust.

Lots of fun to drive, nice low, loud, exhaust, but now I need to drive it early mornings and late at night and it's too loud for neighborhood driving.

Can anyone recommend  a good exhaust guy that can tune the sound?

I am hoping for same note, lower volume.

Thanks, M