I've got a series 3, it's been fitted with a transit di engine, works really well! The gearbox is the original series box and transfer box, but recently blew the transfer box and wont engage 4wd! So was thinking of a 200 or 300 box and transfer box! I'm running range rover axels! Is this possible? If not or if so any one got a box for sale whether it be a 200 300 or series box? Cheers! Fred