Hi Mate,
I was looking at putting mk5 seats in my mk2, there is a guy on edition 38 (called chunkeymonkey003) who has is in the process of doing it and was happy to help out - also, search on the mk2 section of Ed38 for "what rear benches fit mk2" or something like that as there are a couple of photos. Seems the rear is easier than the fronts...
I ended up getting an edition one interior instead of the mk5. It came from worcester and I used Paisley Freight as the courier, they picked up yesterday and delivered to my parents place near Lanark at lunch time today. They charged me the grand total of £45 door to door for front and rear seats and door cards

Won't see the seats until tomorrow when I drop by, but my sis tells me they arrived ok
Hope that helps you out
Ian