Nothing to loose...
But, have you tried it passive?
I've passivated 2 SR300, one with a P and Artec QTP Passive Tone, tother with Maida Vale Stacked Coil Jazz pickups, an SR400 with Twin Coil DiMarzios, both Vol and Pan and a SR500 with the Std Bartolinis and a 3 position switch, and no on-board tone control.