<p>I dunno. Herman once showed me a pile of D type mainshafts all broken in the same place. <br>Sure seems like there must be a weak spot there. The equivalent place on a J type looks at least twice as strong.<br><br>YMMV<br><br>- Randall<br><br>On 9 May 2016 11:28, v6spitfireguy@cox.net <v6spitfireguy@cox.net> wrote:
<br> I don't think that I would worry too much about the differences in the
<br> types as far as strength is concerned. For a GT6, even modified, they are
<br> plenty strong. </p>