I have a set of Aisin locking hubs I would like to install on my 77 Fj40. The hubs are from an 86 fj60. I understand I have 27 spline birfs and the Aisin hubs are 30 spline. Can these be converted by purchasing longfield inner hub gears? I know I can just buy the 30 spline birfs $$$ and be done with it but I'm not interested in that just yet. OR to make it simple can I just bolt these things on to my 40?