Looks all hacked up also..... The 79 and 80 motor are the same less the ignition. Carbs are 34mm but use different internals. Because the 79 has mag disc wheels they would only work if you moved everything to the 80 bike. This means swingarm, forks and you would have to make brackets for the rear master cylinder. I would look for a bike that has not seen any "mod work". Starting with a stock bike makes it a lot easier. It's getting hard to find one that fits that bill anymore. Most of the mod bikes where done poorly with little to no knowledge of what should be done. That's what makes the "cheap".