I can't afford a new bass at the moment, but want to get my Carvin sounding as close to a jazz as possible. Also, I have the single coil hum problem in a bad bad way. So, I am thinking a set of fender vintage noiseless pickups would help with both problems. I have a deal set to get a couple at a good price but need to know if they will fit in my Carvin without any modifications. Are the two pickups on a jazz different sizes or are they exactly the same size? My pickups are both approximately 3 and 3/4" wide by 3/4" high (don't know the depth), and the distance from center to center of the screw holes is 1 and 1/2". Am I looking at problems here?