The best IMO is Greg Whitehead, owner of Whitehead Performance. 15+ years experience dealing with Z's, and a very straightforward, no bulls*$% kind of guy. His shop is located on Duffrin St. just south of Finch. You can get the address from their website at www.whiteheadperformance.com.
Tell them Nigel sent you...
BTW, are you a memeber of Ontario Z Owners Association? It's a great resource for getting information like this. There is a meeting this comming Tuesday in Pickering. You can get the address information from the web site at www.ontariozcar.com in the events section.
Thanks Nigel. I was just checking out the web site and it seems to be exactly what I have been looking for, someone who knows what he's looking at when he opens the hood. The last guy I brought it to , did end up fixing it, but he was winging it, if you know what I mean. Will definitly be in contact with them , it is just down the road from me.