Hey man, I'm the guy that lives down the street with the old corona, my good mate is a fully qualified auto elec and mechanic, lives in sellicks and works in willunga so very close to ya.
He's been doing all of my mechanical and electrical work for years and is always keen on a cashy, does a wicked job too. I just asked him and he can take a look in a few weeks, let me know if your interested and ill give you his details.