I've got one of those inexpensive Ibanez GWB35s and am trying to decide whether or not it's worth it to upgrade the electronics. There was a previous thread on this topic that was informative and useful, but hardly anyone posting had actually done the discussed mods and posted results - so I'd like to revive the topic for another go-round and see if there's more response. Bartolini makes three pickups that would fit w/o routing out a larger pickup cavity: the BC5CBC, the 72BC5C, and the XXBC5C, and each of these has a neck-pickup and bridge-pickup version. The BC5CBC has two coils around blades, the 72BC5C and XXBC5C have four coils. I guess the additional coils would give you the ability to wire two of the coils together in series to get a hum-cancelling single-coil pickup and then put two of those hum-canceling coils in parallel or series. You could even offset the coils similar to P-Bass pickups (the nice folks at the Bass Emporium pointed that out). The BC5CBC wouldn't have a hum-canceling single-coil option, but could be wired humbucking series or parallel. Which way would be better? Does anyone know what the difference between neck-pickup and bridge-pickup versions is? More windings in one? Are they 'voiced' differently? The pickup position on the GWBs is about where a bridge pickup would be positioned. On the other hand, wouldn't you generally want a bassier pickup if your only pickup is close to the bridge, to compensate? Replacing the pickup and preamp w/ Bartos for the GWB35 would add something like $240 (assuming NTBT-918 preamp) to the $780 original cost (plus eventually a HS case). There are stories around of poor quality control on the GWB35s, but I seem to have gotten one of the relatively good ones, action and playability are really nice. But it still is a cheap basswood body, not the ash body of the GWB1/GWB105/GWB1005s. Is it silly to put that much money into upgrading such a cheaply-built bass? Should I just try to get by, and maybe eventually buy one of the used GWB1s that occasionally pop up, then try to sell the GWB35? I've never played GWB1/GWB105/GWB1005, but body wood can make a big difference in sound. Even if I were to somehow obtain one of the Willis-special Barto pickups, the bass still wouldn't be a GWB1 (though it'd be closer). I think GWB105s and GWB1005s are going to be out of my budget range for the forseeable future, though. Thoughts? Opinions?