I'm a bit surprised this hasn't been suggested yet, but unless someone knows otherwise, a Steel, Brass or Copper baseplate should do what you want. Steel would increase the inductance, while the other metals increase bass "warmth" or something. Here's the explanation: http://www.tdpri.com/resources/tele-bridge-base-plate-materials/

BL Equipped Guitars:
-Parker NiteFly V1 Strat type: Wilde L280SN/L200SM/L200SL/L280SL w/L-filter & MT.
-Agile ST-625EB: Wilde Microcoil S set.
gckellochguitartech