B100 during the winter?

[NormanConquest]

Does anybody run B100 during the winter?  What have you added to your vehicle (short of an Elsbett kit) to solve cold flow problems?  Would simply using a B50 mix work?

Also, would you recommend I replace the fuel filters? 

BTW, I'd like to thank the group for my first tank of ASTM B99.  The car runs great, and the engine seems perceptibly quiter.