I want to transform my 2007 Harley Road King into a trike and have bought a rear end and upper frame from a bike that was totaled froma fire, there are numbers on the rear end "pumpkin" and a white tag, but it's not readable, it also has drum brakes, the numbers on the rear end are O4 B2137 06/05/07 , i can send you pics of the rear end if you want, and of the numbers,but really like to know who's product this is, as i need parts for it, if not, do you have any idea what company built it, it is very heavy and has a belt sprocket. Thanks in advance, Tom Grimm