I lost 3 inches of height just by changing the tyres!
As for the front, just cut a coil or 2 out. Up the rear its a case of removing a few leaf's from the spring pack.
I wouldn't go the route Des did (axle over spring - same as the caddy), whilst it was very cool, it was too low and he couldn't bring the front down to match the rear without massive reconfiguration of the whole subframe/suspension setup.
Oh, that blue one didn't have any suspension on it, looks like it was just sat on the floor with the wheels placed in for good measure, prob a spares wagon or summat...