[xlr8or]

Cave man I don't think it's worth the effort. Kirkham already has the mounting hardware for the Jag setup and the Jag diff isn't but a couple hundred more than the 8.8. You would also need to have a custom set of half shafts made to fit the 8.8 on the inside and the Kirkham hubs on the outer. They use totally different half shaft designs so it would be difficult at best.
Three peaks has an advantage as he is scratch building and can put his own rear uprights in that will accept the Ford axles for the 8.8