I have a Fender MIM Jazz bass with what I would consider to be a poor neck. I would like to replace it with a fretless neck (unlined) and was lookiing at the Mighty Mite MM2919 fretless P bass neck with ebonol fingerboard. I have also seen a maple neck by EYParts which implies it is made for the J-Bass. Before I drop any cash on either of these I wanted some feedback. I noted also that the Mighty Mite MM2919 specifically references P-Bass and there does not seem to be a Mighty Mite J-Bass version of the neck. Wanted to confirm that there are no scale length or other issues with installing the Mighty Mite MM2919 neck on a Jazz Bass body. Also, I would like any feedback anyone may have on the EY Parts fretless Jazz Bass neck. I believe I would like the darker colored Mighty Mite neck, but could be swayed to the EYParts neck fairly easily. If anyone has done this or has any input that would be greatly appreciated. Thanks in advance!