Good grief, enough with the red REAR inner fenders on Oldsmobile W machines. One incorrect article does not make it true. Olds never use them on the rear, fronts only. Do some research (as the author of that article should have). There are enough one owner and/or original survivor cars out there, that if they did exist for an Olds, you'd be able to find ONE picture of them. But you won't, because they're unicorns.
Excellent work BTW. Built one in almost that exact same color.