Hotchkiss or Helwig rear sway bar?

I have a '74 Duster with a full exhaust (3" tail pipes) and would like to fit a rear sway bar some where back there.

I would love to have the firm feel T/A bar but... from what I have read it wont fit with larger tail pipes in our A-bodies. So, I have narrowed it down to just the two, Hotchkiss and Helwig.

Does anyone have any experience with the Hotchkiss sway bars? I cant find any pictures of one installed in an A-body.

What do you guys think?