Hello, I have a 1997 SeaRay with a 3.0L mercruiser w/ a Alpha 1 drive. I think it is a Gen II. I broke my throttle control and I am now wondering if I should buy a new 3000 control or go with a 4000 control. My question is that I am not sure if I can go from a 3000 to a 4000 control w/o changing...