69 camaro multi leafs

[Ivan Vella]

Has anyone used the CAT 5 multi leafs by Global West?
It is for a 69 Camaro that will have a wavetrac rear end with around 800hp.

They have some sort of a swivel bearing in the rear where the bush normally goes that is supposed to stop the rear end from walking/binding.
Does anyone know if this would even work?

Or does anyone know of any other type of multi leaf set up that is any good?
I have a TCI 4 link already but it is extremely hard to get it passed for public road use in Australia due to our stupid Modification laws.

The car is mainly getting set up for pro touring use, but I also would like the top of the rear wheel housing to sit so that it is level with the top of my rims so as to tuck the tire under the guards. Would 3" lower leafs do this or would that be too low?
(18" wheel 285/45 series tire).

Any help would be greatly appreciated.

Ivan