Do they make a kit to put a T 56 into s A body?
Due to the amount of cutting that's needed, there isn't really a "kit" to use while maintaining torsion bars for any of the Mopar flavors.
I bought from SST, they have an Ebody and Bbody kit that comes with a lower mount, so the upper crossmember is up to you. If you remove the torsion bars in favor of coilovers, there is a substantial reduction in load going through that area.
...as far as Abodies go, you'd have to get with SST or American Powertrain.