Glad to help Dave from London. I'm in Mississauga so we are pretty much neighbours.
I think you are now the resident expert (having most recently done the work)
Yeah those plugs were a pain in the arse. At least they weren't seized. That was my biggest worry.
Did you replace the rubber seals too? Were you amazed at the pools of oil in the plenum? How were your EGR ports? Did you bother with the valve cover and Fuel regulator hose? (I didn't bother with the valve cover and my regulator hos was tight.)