I just purchased a complete, running Y block with the block casting of EBU 6015F. A quick internet search indicates that casting is from a 1954 car and is 239 cubic inches. What other things should i know about this engine?  How is it different from the 272 and 292? Are it's components interchangeble with other Y blocks? Since it has all the accessory parts like water pump, manifolds, carb, distributor etc I'm assuming it's worth the $25 i paid for it. What i would like to know, is it a rare engine or worth anything more/less than the run of the mill y block?

Thanks in advance for your expertise.

Steve

Steve