Hi All,
I converted my GT6 to have rear discs about 5 yrs ago and I would recommend the upgrade but only if you have already upgraded the fronts calipers as the bulk of the stopping power needs to come from the front. I used the MGF calipers and handbrake cables and having a proper handbrake is one of the best things about the upgrade!
After looking at different ways of mounting the capilers and reading about using MK2 Escort brackets I decided to get a local engineering firm to manufacture a pair of brackets in engineering quality aluminium.
I remember posting this on the old forum but not sure what I've done with the photos now.
Cheers, Jason.