I highly recommend the ThunderTrons. They are really nice pups. Good range, nice highs and lows and sound really good when paired up with 500k vol and 250k tone pots. I also really like the DynaTrons, a cousin of the ThunderTrons. They are top mounted, modeled after old DeArmond pups (you do have to do a small rout for the magnet that hangs down below the surface about 1/2").
Excellent prices too compared to other custom pups out there on the market. I love 'em. What else would you like to know?