BBC 454 RV Engine ID

Hello everyone and Happy Holidays! I am new here and hope someone can help me narrow down on what I have. I recently purchased a complete low mileage 454 RV engine out of a 1986 Fleetwood 27 ft. motorhome. I am trying to verify if the engine block is a 2 bolt main or a 4 bolt main block without dropping the oil pan. Also, would it have forged internals or just a cast crank? I know it may have the "peanut" port oval heads 112cc or 119 cc, not sure. Have not had the valve covers off to gets the head casting numbers. The casting number on the left rear of the block is 14015446 The engine has only 33, 342 miles on it and is all complete. Even the emissions, AC are still bolted to the engine. A friend of mine parted out the motorhome due to water damage in the walls, and I ended up with the engine. Any input or info is greatly appreciated. Thank you