4" stroke 360 crank in a 318..?

On ebay there is a crank from Eagle that is for the 360. It is a 4" stroke. I know that you can "turn down" the mains on a stock 360 to fit the 318. Could the same be done on this Stroker from Eagle. They only want 230.00 for the crank. Would it be worth it to put into my 318 which is on the engine stand waiting for some machine work to be performed? Or should I buy a Chevy?