I came across a 20th anniversary Optimus Prime at the Flea Market this summer for $2.00. This Prime (formerly a $70.00 fig) was in bad shape missing his head and feet but I picked it. I decided to make him into Motor Master, the Stunticon leader and fellow flat nose Semi.
The head is completely made from sculpty and plastic sheets. The feet are both made from parts of a dollar store robot. I gave him a new paint job added the Decepticon Logos and thus we get Motor Master.