I've done that one on AutoCAD in the past... Only diff with the factory one is in the raduises. The H-D one, actually just a quickly moded "H" one, has straight cuts rather than curves on the R... Otherwise a perfect replica. I don't know anything about a smaller one
Don't buy them on eBay, they're expensive there. I've got an address somewhere much cheaper, something like Fox Productions, he's not on the web...