Ashman, I don't doubt any of what you said except that I thought a full commando chassis was lighter than a full featherbed chassis?
That may be so , but its ' creative arithmatic ' , as these things weigh several tonne , even without the Mods .
NOW , If they Said ' Commando Chassis & featherbed Chassis ( The Frame ASSEMBLY ) as in mountingplates , bolts & Spacers .
I might be a differant thing All Together . as that bleedy cradle weighs about five times what a whole FRAME weihs. thereabouts.