i'm looking at a marauder for my second build (first was a delta wolf). walmart has a 26" mongoose with 2 disc brakes for $179, looks like most of what i'd need. Some ideas: using a front shock on the back! would allow the wheelbase to be shorter as the wheel could be closer to the seat. How about the front wheel being 26" (with shock and disc brake)? What about under seat steering? Or the steering bracket just above the frame, with the handlebars under the legs?