I HAVE A 252 PARKER. I HAD A SINGLE 225,EVINRUDE FICHT THAT MOVED TO 41.7 MPH. IM HAVING INSTALLED TWO 150 4 STROKES. I DONT REALLY KNOW IF I WILL GO ANY FASTER,BUT I WILL HAVE TWO MOTORS TO GET ME BACK FROM THE MIDDLRGROUNDS. I GOT AT LEAST 2 MILES TO THE GALLON WITH THE EVENRUDE, WILL POST...