My Lace Helix, I had to change the bridge to go a Hipshot B Style, it gives me just a little big more string spacing and makes it a lot easier to play, the tuners are also Hipshot Ultra Lites, they are .6oz lighter than the stock tuner and thus gives better balance to the bass, finally I added recessed strap locks, just because I had them laying around.
To quote my bass player friend Josh Kerr: "It's all murdered out."
The extender allows my B string to go down to a low A.
I love the way the flat black bridge looks on that bass.