'67-'72 mopar 318 small block wanted

I live in Sacramento,ca and I'm currently taking automotive classes and I need a small block engine to work on and build for school. I drive and own a 1972 Plymouth scamp with a 5.2L 318 in it,and would like to build a new fresh motor to put in it. I'm willing to pay $100-$300 for the engine and I can pay for shipping if needed. If nobody had a 318, I will also take a 340, 360, or 361 for the same price. Thank you

1972Plymouth