Don't give up, if the engine is the only thing wrong with the car, you can have it fixed pretty easily.
You might also make a wanted ad here on HybridZ, since it seems lots of people on here have spare engines, old engines no longer in use due to swaps, etc.
Making an ad on Craigslist might also be a good idea, since some people have spares they're not using, but aren't motivated to sell them.