“I have a 1998 289 and tried to switch to 4 stroke Yamahas in 2005 or 06 forget which :), BUT it turned out the cowling on the 4 strokes were too wide and we were unable to to turn the motors.
At that time my dealer had Yamaha and Mercury. I did not want to return to 2 stroke so I ended up with the 250 Verados. These were GREAT until about 2 years ago when the you know what hit the fan!!! Mercury worked with me and for the past year things have been fine. (fingers crossed). I think the new style Yamahas are not as wide but I am not sure.”