I have a Warmoth fretless P neck that I'm not using. It has a rosewood FB and I've learned that I like something harder. It's in very good shape with some minor blemishes. Also, you'll see in the pics that I didn't get the string retainer quite in the exact place. Specs below, this next was $403 plus shipping when I purchased it. The tuners in the pics are not included.
Serial Number Description
BN5065 Item Number: BN5065, P Bass®, Super Bass, Right Handed, Maple, Indian Rosewood Fretboard, 1-11/16" Nut Width, Slim Taper, Lined Fretless, BML (17.5mm) Tuner Ream, 21 frets, Straight 10" Radius, Cream Face Dots Inlay, White Side Dots, Black Corian, Vint Tint Satin Nitro, 34" Scale, Standard 4 Bolt, Standard Steel Rods

UPDATED
Trades I'd consider.
dunc
Serial Number Description
BN5065 Item Number: BN5065, P Bass®, Super Bass, Right Handed, Maple, Indian Rosewood Fretboard, 1-11/16" Nut Width, Slim Taper, Lined Fretless, BML (17.5mm) Tuner Ream, 21 frets, Straight 10" Radius, Cream Face Dots Inlay, White Side Dots, Black Corian, Vint Tint Satin Nitro, 34" Scale, Standard 4 Bolt, Standard Steel Rods

UPDATED
Trades I'd consider.
- Similar Warmoth neck; 21 frets, satin nitro finish, P-width, super bass profile (thinner)
- Fender fretted neck with nitro finish
dunc