repalcement

Hi, Is there any one here own a Thumb 6 bolt on had PU or preamp replacement?? My Thumb 6 sounds much small than my other Warwicks, it is SD PU w/ MEC 2 band EQ(factory setup), I can't find the PU for my Thumb 6, the size just doesn't match, so I will go change the circuit to Bassline EQ...