After getting the engine running for the cam break-in, I've started to make a bit of progress on the turbo fitting and installation.
Yes; the blue rag stuffed in the vent hole is a specialty aftermarket part. I would have rather connected the wastegate plumbing further downstream, but I realized that there wasn't going to be any straight exhaust tubing until after the second bend, and so settled for a close-in connection. Intake fitting comes next.
