The VIN number is etched into the frame, so there's a sticky wicket there. I don't know how Triumph would handle it, but Harley will if you cut the steering neck off (where the VIN is) and send it to them they will send you a frame with your number on it. You have to cut up the remains of the old frame of course. If you just wanted to get any old frame, you would need the title too, for you would actually be rebuilding THAT bike, not your bike. Of course when it comes down to doing it....follow the manual and it is doable....might take a while, but it's doable.