Yes...
but who buys a sandcast frame without the engine?
Member Ujeni, in the first page of this very same thread, is asking the original poster wether he would be interested in selling the frame....
If there is interest in the frame, the rest of the parts will go easier. Recessed ignition, cut front fender, short chainguard, wrinkle tank, frame, you already have more than 1k on that. Sell the rest of the stuff and you get close to the 2k, enough for getting a decent CB750, at least doing a quick math.
I think this situation could be beneficial for both the original poster and those in need of sandcast parts. The OP can get a decent profit on his state sale, and the sandcast people can get those elusive parts.
Think about it: it is very unlikely that if you gather all the scathered sandcast parts around the world, you complete an exact number of sandcast bikes. Somewhere there will be excess of chainguards, tanks or frames, and there will be lack of some other parts. I mean, if this bike gets restored and there are no surplus sandcast engines, this bike will remain unfinished forever. And whoever is in need of a wrinkle tank or a short chainguard will have his sandcast also unfinished because this bike, that could have be a great donor bike, is awaiting for a sandcast engine. Not all the bikes are a good base for restoration, and some must be sacrificed so others can be completed. At least that's the way I see it.
