I sure hope that the quality of these has improved over the years.. I had installed quite a few of these when I went through a spell where I had two fail in short order. One cracked the mounting flange about 2 months after install and one cracked in nearly the same way during installation. I switched to the Powermaster with the clockable ,billet nose and have had nothing but positive results since.
And all Panteras ( -1 and -2 ) use a 164t flywheel.
Ron