Well there is the LT77 gearbox and a R380 gearbox, if your told it was a 200TDI gearbox that it came from then its probably a LT77 which has 5th gear top left. The R380 has 5th gear bottom right, the LT77 was used on some 300TDI's for a while so you could have either...
Anyhow - I think its the transfer case it mounts to anyway - the LT230 which would mean it could go onto all the landrovers apart from the Borg Warner unit fitted to some RR, oh and not hippos.