Just given a 5hp Montgomery Ward Sea King mdl.#GG9001B, serial#55X596982,figure it's a Gale from other post, need info on what year it is and what model OMC's parts would interchange if any. Also this motor has no shifter,does that mean it's a direct drive? Motor is complete and the piston is'nt stuck but sounds like rust in the fuel tank, any suggestions on treating rust in tanks? What kind of compression should I look for in this motor? Last,does this mdl. have the wobble or rotor type water pump? Sorry for long post and all the questions, thanks for any info or comments on this motor.