If you can repair the stuff that it will need, buy it. If you have to pay someone else to repair it, buy a newer bike. One member bought a cheap not so good 83 and had about $5,000 invested by the time it was finished because he paid someone else to repair what it needed. He seemed happy with the end result. And most shops won't work on a bike this old. Another member bought a clapped out 83 and did a frame up repair himself and it looked great afterwards. They are fast, fun bikes after you get them roadworthy.