A whole, whole, whole lot of work and fab or money if you cant do the fab yourself. I have been looking at doing a fox rwd, and they are a whole lot cheaper and way easier to work on than a mk4. I also have some brazillian brotheren that have done rwd drag foxes to follow. Atleast quicktime has the bellhousing adapter to get the 1.8t to a t5 tranny. Everything else is going to be custom all the way and dont even think about asking a shop to do it. You could buy a Bently after paying a shop for this amount of custom work.