ok here we go then
the basic blower parts for the 6 and 8 cylinder engines are identical and interchangeable with the exception if the housing and rotors which differ in length. two 8v blowers are mounted on the top deck of the 16 cylinder engines and are driven by the gear trains at each end of the engine. NOTE: the otm (optional turbocharger mounting0 type blower does not include an oil orifice :o in the end plate since the blower bearing are lubricated by the drain oil from the turbocharger. there is one paragraph on one of the pages ..... lol