has anyone or does anyone know of ,put a solid axle on leaf springs into a ford territory

Nope.

Falcon and thus Territory frame rails were straightened when the Control Blade IRS replaced the live axle for better chassis rigidity and the floor is lowered so there is no room for the diff centre to move upwards on suspension compression either.

Why would you want to?

But throw enough money and engineering nous at any problem and they'd be a way.

From what I can gather, the Control Blade suspension system is crap.....bushes don't last, and the joints too.

ok i was under the impression the territory shared the same chassis as the wagon which has solid axle leaf springs, and i thought it might be cheaper than replacing bushes and diff mounts which seem to be a recurring problem with the control blade suspensions