I looked at their online catalog and didn't find the kit. BB member JoeCab is the owner of Centerline. Perhaps you can ask him directly.
If not, it would be a matter of welding the 101 spring seats onto the top of the tubes and switching over a mount for the upper triangle.
Several shops in California have done this, as far as I know. Owners talk about using 115 LSD rear axles in Giuliettas.