Hello, I just bought my first powerboat and am not sure on the engine and am a bit confused trying to id it. It is a 150 HP v6, 2 stroke, carbed,merc w/ serial number 0G541105. The PO told me it was a 1997 engine which had a full powerhead rebuild in 2005 ($2800 of reciepts). Just trying to make sure I know which of the half dozen 150 HP motors they built back then so I can order the proper parts and such and know what I have. They certainly make it confusing for the newbies. Thanks for any help.