This came off a nearly new Spector Rebop 4MM bass. Why? Because I bought a special order ReBop fretless neck for it. A ReBop neck (blank with no tuners or nut), I believe, would run you between $450-$500. Not sure about one with the Maple board upgrade. This has also been upgraded with a Spector brass nut (ReBops usually come with the teflon nut). It will also come with the tuners shown. This will fit any Spector ReBop 4 string body. The only trades I would consider are a Markbass combo amp. Either the 1x12, 1x8, 2x8, 2x6 and maybe even the 1x6 size. I might keep this if someone out there has a ReBop 4 body for sale. Let me know. Thanks $350 shipped in the continental US.