Will these fit the route that is currently there?? Im going to be picking up a LB or BB75 that is about 7 years old. I will play it first to see what it sounds like. But Ive heard that the Pups and sometimes Pre are the weak points in a otherwise solid bass. Ive heard alot of good things about these PUPS, Im not a big fan of jazz style. I was hopeing these would be a good solution. Any ideas or other opinions/options??