I like the look, and want to set the seat a little farther back. Yes bottom rails very easy just add tube. I can either lengthen the upper tubes or cut out bend in back bone and make a latteral for down tube to extend the backbone. which is the way I am leaning. Either way I believe I will have to cut upper welds on axle plates to get the angle right on upper tubes. Have it mocked up if I can figure out how to post a pic off of my phone I will