I have been working on putting an 0411 onto a 6-71 409. I am using the vortec distributer with a 1" spacer to get the 1x signal. I have a friend in drafting and computer design who has scanned the 24x reluctor and the harmonic balancer. The plan is to split the reluctor into 2 pieces and add tabs that will line up with bolt holes on back of balancer. This is as far as it has gone as I am at the mercy of his busy schedule. He has the water jet or laser to cut it with so I guess I will wait.