I have a 1968 GTO that sounds like it is having valve issues and there are about 110k miles on it. I have had it about a year and I am debating whether to convert it to unleaded fuel anyway. It is a driver and I am also considering electronic ignition and an electric fan. I may even consider a rebuild of the engine. I really need to find a reputable and reasonable mechanic down here. Anybody have any suggestions? I would really appreciate some advice. Thanks.