You are a lucky guy to find one. The headlight and battery should be easy, Suzuki used those same components on lots of models. The motor parts, you better find a way to reuse as many original parts as humanly possible.
I have a pair of cylinder heads. However, they are buried away somewhere so it may take a while to find them. Also, I think they will have some broken fins. If you are still interested I will look them out?