I run twin Walbro 255's, less current draw than the e85 pump and more flow. Still I had to upgrade the tank lid for the extra current draw and flow requirements. I ran twin feed lines, one to each rail on the VQ.
For 400+kw intank, single pump, the e85 Walbro is probably your best option, but you may have to re-pin the plug at a minimum. I have had issues with the DW pumps on ethanol, and will never use one again.