I tried a brutal Gibson Dirty Fingers patterned bridge humbucker from Guitar Madness on eBay named Dirty Digits. The thing is wild! The seller also has sd jb patterned pickups and many others cheap enough to try and toss. I also tried a bridge humbucker by a US custom winder on Reverb. He calls it the Damask Metal which is great for down tuning too. Wound with 44awg and C8 magnets at 17.2k, thing is brutal in driving gain but still has nice cleans. http://soundcloud.com/littlebadboy/touch But... if you really like your guitar the way it is now, then you may want to keep the original pups in case you will have a change in heart in the future. Perhaps you can try connectors for easy swapping. Or, buy the same guitar and mod that one!