I have this 1979 Bayliner Santiago with an MCM 260 and wish to start replacing the impeller on it myself. While researching the different drives though, it seemed as if mine was a mix of different ones or was replaced somewhere along the way as I believe the boat originally came with an MC-1. I have recovered most of the identifying numbers on the boat but the drive number on the drive itself has eluded me. I see a faint hint of a number on the port side decal in the upper right but do not know if that number is just stamped on top of the decal or firmly stamped into the metal of the drive underneath the decal. I don't want to remove the decal and find there is nothing underneath it. Any help? Thank you in advance!