mallory c9000 distributor firewall interfearance

I have a mallory c9000 series unilite distributor in my 68 barracuda and found the wiper motor causes the wires to arc out after a short while of driving.
I read in the tech archive that there is a conversion cap part #205 and a rotor #336 that would cure this. Anyone used this set up? I checked out the online catalog and found nothing there in regards to this part.
If anyone has used this how about a pic or a url that shows this set up. that would be greatly appreciated.