wen i last looked, i think around £2750+ vat for the kit,
best ask bearnie gearboxman.
i run a r+d dog box, which is miles better on full go gear change, as use no clutch, but round town abit of a pig, and very noisie in and out of car.
or also try someone like A1 steve scott as he does get in 2nd hand units for around 1300-1500 for a good big tooth box.