Sir Penetration is based on another Muddy fox belonging to The Wart's Old Man, (was he happy? well the wart did not sit down for a week) with the head tube off?? Yes Will's old Scott brazed on the front using part of the table leg as a bridge piece.Handles really well and so far has not killed the boy. We were looking for an 'Instabike' kind of conversion as the earlier models involved lots of cutting and brazing. It seems to work, the next thing is to do a really radical version.