I wonder how long it will be before a small specialist fabricator offers a M3W chassis built with better quality tube and welded by a skilled welder who cares, and then with a NDT Certificate covering all the welds.
Yes, I've often wondered about this. The front suspension geometry could be sorted out at the same time (a la Empire kit). Also incorporate a rear swing arm so that the back wheel can be easily unbolted? However, with modern regulations, would we have to adopt a Q plate due to such a major component being changed?