Good question... I've seen original, or NOS motors on ebay and the internet, and they were both silver or black. I was never really 100% on it. I'm trying my best to make it all original, I know it will not be OEM Gold certified, (I wish! ) But I'm still learning about this stuff all the time. I do need to paint it a glossier black before I put my dash in. I'm sure when it's at the Nat's next year, it will get picked apart by the judge somewhat... my paint job (blue) is a show type finish, so that pretty much throws off everything right there!
Thanks for all of the great comments guys! It took so long to get to this point!