Well I discaded factory seems price would be lots high . . . maybe if I live in USA wouldn't matter, but i'm in México so add a regular 35% for taxes and add about 60+ USD for shipping so if we are talking about 400 for a neck adding 35% is . . 540 + 60 usd shipping = 600 USD neck same as buying a new tribute G&L xD!
So I already talk to Rick a guy that built basses here in Mexico (check his post:
mexican luthier first single cut!!! ) and he will built me a new one with maple as base and ziricote as fingerboard for about 320 USD ) so i'll put my bet with this guy and see how this goes

when the bass gets ready I'll post pics and maybe soundclips, cheers and thanks for your help.