Exactly what the title says. I have a P bass that I love. I want to put a black bridge on it purely for aesthetics. I've heard a million stories about what high mass, brass, added sustain, string balance, blah blah blah. But I want the truth damnit! Not conjecture and opinions. Real science behind why I should or shouldn't upgrade my baby with anything other than a cheap black bridge that I already have for one of my basses that I paid $13 for, that works fine.