Misterhelms

Hi there. I am in the process of purchasing a 2004 Monterey 322 with Volvo 5.7 OSXi engines that have about 256 hours on them. I've been reading through forums and have seen issues with the ones that have an XDP drive. I am trying to determine if this is the same engine as none of the documentation states what kind of drive it has. I am assuming the "X" in OSXi may stand for this, but want to clarify as I would have serious second thoughts about purchasing the boat. Can anyone advise?