SST-50 Driver for XM-L U2 @ 3.5-4a

http://www.dealextreme.com/p/8-4v-sst-50-5-mode-memory-circuit-board-for-flashlights-50025


Want to use this driver (some claim 3.5-4a) in my next 2x18650 XM-L U2 mod. Does anyone have a mod to ditch the blinky modes?