It looks fantastic-- well done, and it will go wonderfully with your M60 hull with the pack removed. As I recall, the basic engine housing was painted a gloss white, the ducting was a burnished bare aluminum, including the "accordion" air intake/blower connectors, which were segmented so they could rotate and expand to connect. The insulating blankets on the piping had a kind of grayish braided wire metallic look. Of course the whole thing would have been oily and dirty, unless it was a brand new pack. There were also some electrical "pigtail" connectors that connected the electronics to the hull electrical system, I don't see them in your model-- and I can't remember where they were after all these years. It was a great thrill to see the real thing in a "test" before the pack was re-installed in the hull-- we'd hook them up to a test stand and run them and watch the final drives turn-- if everything went well, we'd drop it in and button up the rear deck-- which is what we used to position the pack on during maintenance.
VR, Russ