New to this site, just bought a 83 and the person before swapped in a 351w but kept the V6 tranny thats in it. I would like to know if its a AOD or C5. Does anyone know what it would be? I dont plan on having it rebuilt till spring but would like to be able to get prices on it now. I spent 45min carefully scraping the painted over door id sticker only to find out it was a door off a 87. Or is there a site to decode the vin if it has a tranny code in it. The shifter goes 1-2-D if it helps. Thank you!