I havent really thought about anything, i saw the fiesta centre do a rear break conversion for £200, havent a clue what they are tho!
The only problem i can think of facing is the exhaust, getting an RST to fit the Fiesta, but i imagine thats the least of my worries
How many hours work in total do you think there is in it then mate?
I take it ill need a full RST for the conversion to take the engine, gear box, wiring loom?? pretty much everything?