Looking for a diesel engine for sale

Hi,
as it says in the title I am looking for a diesel engine that will fit straight into my 1974 s3. I am in the west london area but will travel for the right engine or right deal. If you have or know anyone that has got what i am looking for please let me know.
thanks
eddie

I'm also after the two chrome balls on the front axle
By the way I have a land rover series 3. 88"

i have a series 3 diesel that needs a rebore, new pistons/rings. quoted £100 for rebore and £120 for pistons/rings. head was rebuilt like new last year.
i have learned (the hard way) that a good second hand series engine does not exist. but this would be a good way of building your own "like new" engine from scratch.

all for the bargain price of......................................................£0

i planed to rebuild it myself but other projects mean i now need the room.