I tried emailing Tony, but the message bounced back, so I'm pestering anyone who has converted an HEI dizzy. I got one from the "recycling facility"(can't call them junkyards anymore) out of an '80 250 I 6. Tony put up a picture of his holddown clamp and said to trim off the collar so it will fit further down in the block, and something about grinding 3/8" off the bottom of the shaft. Do I need to change the driven gear? Is there a website with instructions and/or pictures? The dizzy I got has a short shaft extension held on with a roll pin which is slotted on the end to engage the oil pump, did I get the wrong dizzy? Do I take this off, or leave it on? Please help, so far I have a whole $35 invested and don't want to screw it up. I plan on having the coil checked, and replace the cap and rotor. Should I replace anything else? I checked the vacuum diaphram and it works okay. I'm dosing up the centrifugal advance with PB Blaster, because rust from sitting had made it seize up. Should I plan on replacing the weights and springs?