Again this section is a bit lacking in pictures I'm afraid.
What you need
From a donor vehicle:
Rear Wishbones with mounting bracket attached
Rear Anti-roll bar of your choice
New:
Shackles (were still available from main dealers when I wrote this)
Attaching Bolts
Recommended - New Bushes, preferably polyurethane
There are two different thicknesses of anti-roll bar available across the range of vehicles and whether or not your vehicle has one fitted, the mounting holes in the shell should I believe be present. The mounting holes are located in the cross member that the rear wishbones are attached to near the top where it meets the floor pan. It connects to the wishbones via shackles to brackets welded in place. If your car does not have a rear anti-roll bar fitted as standard then these brackets won't be present. It should not be too hard to track down a pair of wishbones with these brackets fitted as they where fitted to a number of different Escorts and Orions MK3 & 4 and as stated in the compatibility section are all interchangeable.
The Orion has the thinnest Anti-Roll bar at 12mm and is what I fitted to my cabriolet as I didn't want to make it too stiff and promote the short comings in the shell. The available sizes are 12mm and 16mm and can be found on the higher spec Orions and RS Turbo's.
Fitting the anti-roll bar is almost a simple bolt on affair, there's just the small matter of the fuel tank getting in the way! I have managed to remove anti-roll bars from donor vehicles with a bit of brute force and ignorance without removing the fuel tank. I've even fitted it into position once as well but it took a lot of struggling and is much easier with the tank dropped. This isn't the most straight forward job in the world and if you do decide to lower it then you will have to empty it as you won't be able to hold it back up in position and align and do up the fixtures at the same time. Though you may get away with just undoing the tank strap and two off side bolts and get enough movement without having to disturb the plumbing. The bar attaches to the forward face of the rear suspension cross member by two bolts and is pretty self explanatory.