As in the Volvo 270/280 and the Volvo SX?<br />The former are the older style drives, the latter is the OMC based SX that came out of the joint venture between OMC and Volvo. They took the OMC Cobra and improved it (changed it from dog clutch to the cone clutch).
Sorry Bondo: <br />I'l try harder next time. <br /><br />Thank you Lou C for your answer.<br />I still have a question, ARE PARTS INTERCHANGABLE Between the two units