1974 Evinrude rotary 45

Hello guys brand new to the Forum I have a few questions regarding my rotary 45 this is my first rotary machine and I am itching to get it up and running I have read a bunch of info off various sites I have torn down the motor and found the throttle valve shaft Broke but intact and I am going to machine a new piece for it for starters I would like to know what motor I have I have seen many guys talk about the wankel 303 but I'm not sure what I have I want to just possibly get new apex seals and replace the ones I have just because I have the motor open and I figure nows the time to do it the model number of the motor is388202 and serial number is E000305 any help would be great and if anyone has any info on pricing a and where I could get the seals would be great thanks

1974 Evinrude rotary 45