Thanks buoymaker, I just got my 52’ 3100 3 speed w/235, 4.11 rear on the road and at 45 MPH she is so noisy I can see some driveline change her the future. For now I need to work out all the other issues that attribute to the noise first before I make that determination. Looking at the 4 speed on the floor, using second gear to start, with a 3.58 ratio, it seems to be a better choice for lowering you gear ratio that the 3-speed.