I bought a 1983 cuddy walk around a few months ago. The guy i bought it off of said the motor was a 1989 Evinrude 175 hp V6. I have searched everywhere for the model/serial plate and can not find it. i also looked at the welch plug and only number i found was 392868. How else can i find out what size motor it is? i have tried searching part numbers off of the motor and still can not find out what year it is. Can someone please help me!!