hello out there, i own a warwick SS1 1991 model with the stock EMG jazz & Precision PU´s. i would want another sound, thicker and better suitable for slap, but with an edge. i wouldn´t mind if changing the pre-amp also.... but i´d rather not put in different sise PU, because i don´t want to destroy my wood. start: pre-amp U-rtro with ??????