You could buy a Chopper Kit that used a Honda CB750 engine for not a lot of money back in the day. Wrecked Honda CB750's were a dime a dozen. Another bike that was cheap after it was wrecked and ended up as a Chopper was the Triumph Bonneville. Chopper kits were available for them as well. I was given a wrecked 650 Bonnie by a Shipmate that bought it and wrecked it the very same day. I ordered a Chopper Kit and built it on the Ship while we were out to sea for a couple or months. I rode it a few months and then I sold it after a guy offered me a stupid amount of money for it. It was a fun bike for bar hopping around San Diego, CA but it was awful for riding any distance at all. I could ride up to a bar and a girl would jump on without even asking her if she wanted to go for a ride. I guess that's the reason that guy that bought it just had to have it. I was leaving for deployment in a few months anyway so selling it was a good idea at the time. I used the money I made on it to buy a new Honda Interceptor in Japan, which I brought back to the States.