ok, back for an update. So up until now I've just been tuning up the motor, had to get a new fuel pump, new water/fuel separator, redo some wiring (had fun with a bad ground) and such. Now I'm looking closer into this rusted shaft coupler. Skidim can probably get me one, but I need to separate the shaft side from the transmission side and take a look to see if it is double tapered or not. So far after looking through as many threads on here as I can find the only way I've seen people separating them is soaking in penetrating oil then giving the end of the shaft by the prop a good whack with a rubber mallet or something similar. So far, that hasn't worked
picture shows the coupler with the four bolts removed. any help would be greatly appreciated.