Z3 Diesel??

[CTE]

Surely not, well why not? It strikes me that if you fit a 535 turbo diesel into a Z3, you will have a very fast economical car, and it will even sound alright. The main problem might be the weight, and the space. Has anyone done anything like this?

[CTE]

Calm down boys, it was only a question.

I have currently got a TVR S with a Cosworth V6, which goes like the clappers, and if driven sensibly does up to 30mpg on a run. I also have a Golf GT 140 Tdi for daily mileage, oh and a Fazer FZS1000 for when I really want to scare myself! I dream of the day I can buy a car, which is both fast and frugal. I do not like big cars, but love sports cars. We have no kids to have to drag into this depressing world.
The other day I read an article in practical performance car about someone who had put a 2.5lt BMW turbo diesel into a Scimitar, and I thought what a good idea. Only trouble is Reliant Scimitars do not do it for me, but Z3`s nearly do. It all started off with the thought of putting said diesel into a Tuscan, but that really was going to cost the earth, but I thought beautiul car, designed for a straight six, with an crappy engine that you could sell for a few thousand, and I would keep it for the long term with a BMW diesel. The only downside being obviously the cost, and the TVR build quality long term....whence Z3.
I was just interested if anyone had already done it, or something similar?