Quest for a Mopar 318

It used to be easy to find a Mopar 318 - heck, people used to give them away for free. When looking for a replacement engine for my 66 Barracuda though, I had a difficult time finding one. When I did, I had to pay $400, more than the going price for 360 cores. I'd like to find 4 more because there are at least 4 different ways to build a Mopar 318 that I'd like to try. If anyone reading this knows where I can find reasonably priced Mopar 318 please leave a comment. Guess I should mention that it needs to be within a 4 or 5 hour drive of Reno, Nevada.