Time for a new frame and/or bike, but not the same as the one you already have. You'd have to be inventive to add cargo capacity to the Steamroller. Current model has a chain stay length of 398mm- you just ain't got the space to hang a pannier back there.
No reason why you have to ditch the SS/FG, but do find something that will allow wider tires and a rear rack.
Last edited by no1mad; 02-25-12 at 08:22 AM.