do you want the bike for yourself to ride, or to sell off when you are done? for a lot of us, we are upside down, but expect the satisfaction of building, riding and fellowship with other riders to be more than enough profit. you won't know much until you start to take things apart. how is the inside of the tank? what do the float bowls look like? is there oil? and if so what does it look like? if you drop a battery in, does any of the electrical work? i think these answers could be found with little or no money, and then you can decide. also, how difficult is it going to be to get it registered without a title? or maybe you want it for vintage racing. ultimately there is value in parts, but also time and effort in getting them sold and shipped. enough to purchase a papered bike? maybe. it doesn't seem difficult to find a rough bike for a few hundred bucks. if nothing else, find a bike you like with papers, and then tell the misses (if there is one) that you are selling the other bikes parts to finance the new one. my wife buys that story for the most part. godd luck with your decision, and have fun.
later,
ryan