Hello. I have a possibly paradoxical problem: I have a Fender American Jazz bass, yet love the warm thumpy tones of a Motown P-bass a la James Jamerson. Is there anyway to warm up or fatten up my tone to make it sound like that? The two things that have occured to me are (a) to get a pair of Basslines stacked humbuckers and just use the neck pickup (wouldn't that effectively make it a P-Bass setup?) or (b) to get a pair of SD Antiquity II Jazz pickups. Any thoughts? Thanks.