I have a Japanese Fender FretlessJazz Bass in Olympic White. I've replaced the pickguard with tortoise and the pickups with Lindy Fralin. I've also added chrome pickup and bridge covers. Beautiful instrument. I don't play it that much as I have an Acoustic Double Bass and an Electric Upright Bass. I was thinking of replacing the neck with a 70's style Rosewood with Block Inlay. Fender makes a Mexican replacement neck with the original bullet style trussrod. Allparts has a Japanese made one with the heel trussrod. Any thoughts on these?