Not sure why the genius's designing houses always put the tandem portion of the garage behind a single 8' door opening. Can't fit a boat in it or a full size truck without pulling the mirrors in every time. Doesn't make sense to me why they design it this way. Anyway, has anyone ever widened an 8' garage door opening? I am referring to simply widening the opening, not moving out a side wall. I'm sure you need to do something to the header, just wasn't sure what all would be entailed. Any ideas on cost?