Hi Mat, welcome to Allmetalshaping!
I know what you mean about swiss cheese Mustangs in Ontario. I had a 68 Fastback in the late 70's, which had holes big enough to stick your head through in the rear quarters when I first got it. That was OK though, I was only 17 at the time, so as long as it had a 289 with a 4 speed and a good stereo I was pretty happy with it, until I cracked it up one night!
There's quite a few of us here from the GTA, and we often get together for metalshaping weekends to keep up with what we've all been up to lately. You're just a week late for our most recent event last weekend, but if you'd like to send me a PM with your e-mail address, I'll add your name to the mailing list for notifications of future events.
Where abouts in Ontario are you from Mat?
Ken