I picked up a 2003 Stingray 4 today - 3 eq - honeyburst, maple board. It was used - and came with a Duncan Basslines installed (the orig p/up was also included). Has anyone done this mod ? I am curious to how much, if any, better it sounds now - versus with the original back in. Should I just leave it and play ? OR - is MAYBE the original p/up better ????