Looking for a muffler that won't rust out too quickly

[blacksambo]

Never had a frozen valve in several take off installs we've tried. For what ever that's worth.

[89Vette]

Never had a frozen valve in several take off installs we've tried. For what ever that's worth.

Interesting that you'd cut open each muffler to check that....and that you didn't confirm the valve's existence when I posted about it last summer.