i did my own
its not that much work, but only if you know what you are doing.
I'm a bit disappointed in the conversion.
i just cant get it to wheel spin in 4th gear. :D
being serious tho, the 200tdi convo is great. slightly too low geared with standard series 3 diffs, mine tops out at 65mph, but it gets there pretty darn quick.
i can see why people would think the gearbox will giveout, but if you treat it like you should, it will last.
the 200tdi has no more power than a rover v8 or the ford v6, and people run them for years with no problems.
and if it does break the gearbox too much, I'll just turn the turbo boost down a bit.
Ian