Poly Locs or Mag Mounts?

-- If I knew I wasnt going to wreck the headers I would, but I have a hard time doing that to a set of TTI's --
-- I've done it to TTI's on 2 different cars - 68 Dart & now on My 69 Valiant - no problems - just be careful. -- I understand you're concern. -- It's easy for Me to say. They are not my headers.