O boy ....................... Ok the Mammoth is a Willies ( OEM ) Then modified with toy parts but is still a willy.
Now the truggy on the cover I don't know anything about, but if it started out as a toyota ( OEM ) then modified it's still a yoda.
Now heres where it gets tricky. Say you build a frame/ chassis from scratch and use toy parts. Is it a Toyota 
Custom made toyota.
what about Nascar ford, chevy ,Toyota are they realy ford ,chevy,Toyota's .The manufactures says there are but, there built in race shops.
i think your low on
UNC....you spelled stuff right
