Grifty - Yes
Key - Yes. It's not like you're being sent to the pits to be checked. Most of the people on that list will just be registered engineers at workshops around Vic. What's done to your car? If it's relatively stock it'll be fine. If you're unsure call one of them up and ask what's involved.
I'm up in Bris but when I went to get my car mod plated the engineer saw that I'd taken the air con out and said that with a nice big gap like that I should strap a snail onto it :p
They aren't a bunch of hardasses. They're just like your average mechanic.

