I owned a '72 Challenger and ended up selling it because it was just too much work. With the money I bought a 'Cuda that needed only a floor pan... Yeah, right. The car looked great, but was far from that, and have had to replace most of the cars sheet metal. It would have been better for me to keep the Challenger, but the 'Cuda is now in awesome shape and I feel great about that. It is a perfect time to buy a finished car, but you never know what's hiding unless they document the resto.
Build it or buy, you still will own a sick car.
Kyle.