short clunk on cold startup

[tinyfrogs]

In the cold weather the last few days, my 2003 GT is making a significant "clunk" at cold startup. I had the clutch done about a month ago when I was too busy to even research the DIY itself. Perhaps there is something they might have done that needs adjustment? A motoro mount, transmission mount, something? I'm confident that if something needs to be tightened down this shop will do it without trouble. It would be nice to be able to go in with some idea of what's going on.

I also get the short rattle or buzz at startup that is perhaps a brief lack of oil at the VVT controller? It's been that way since I bought the car last summer.