you should be ringing around every breakers and scrapyard until you find one, expect to pay £75-200 for a removed guaranteed box. i paid 75 a couple of weeks ago but that took weeks of shopping about, the worst quote i got was 200. fitting isnt difficult technically, you will know what you're doing even if you only have a haynes manual- but it is a pain to do and having the correct tools and equipment is vital, dont do it on a jacked up car! the hardest part is getting rusty bolts off, one of the drive shafts has 8 nuts&bolts holding it on, they are a nightmare to remove. fitting at a garge will vary in price as much as the box, last time i paid 100, time before that i paid 60, so it depends. i prefer to do it myself and not because the price is a rip off, its just garages cant be trusted, everyone will thread bolts and damage stuff, but at least i'll know about the damage and do something to fix it, garages just rush the job to get your car finished.
