Without sounding dense, wtf is a beaver tail.
Don't ask me to Google it as SWMBO is sitting next to me.
BeaverTails are Canadian pastries, basically flattened donuts (shaped like a beaver's tail) and dusted with cinnamon sugar, chocolate, or fruit toppings (great with hot chocolate!)
Think the trouble would be that by the time you have built it you may only have the load carrying ability to recover a Fiat Cinquicento or a Smart car???
The problem with adding an axle is the extra weight of the axle and extra chassis and suspension to put it there, then add the flat bed on top you may end up with more than 1000lbs on your existing vehicle even with cutting the body back to pick up cab.
Not sure the Disco chassis would take it?
Although as a king cab spec lift I think it'd be great!!!
iv had iva test befor and there not to bad and i was hoping to increase the load to 6t if i can.
and i want to use a disco because no one has done it befor.
This might be a cheaper and better plan i will look in to it.