Last weekend I bought a Minn Kota Endura C2 55lb trolling motor to replace my 45lb Endura Max as the 45 struggled to push my Mariner 4 up the river when the current was strong. Since the 45 has the digital maximizer and the 55lb does not I was thinking of swapping the heads out because i like the fluid max twist of the handle rather than the 5 speed clicks. That being said does anyone have any input if you think this would work or not? I figured since they both have the same voltage, shaft length, etc. it would work since the motor is housed down by the prop but I could be wrong. Any input would be much appreciated. Thanks all!