Sienna countach rep

[P B-B]

Hi everyone, new to the forum and need a little help.
I find myself interested in a Sienna countach for sale in Germany.
Was a factory built car with ford cosworth turbo engine.
Been sitting for a number of years and needs a complete re-furb.
Black with grey interior. Also some damage to the rear.
The sort of project i am looking for.
I was wondering if anyone hear know's of the car as i believe only 25 were made?
Not sure of a value for a car in this condition?
I have done some research but cannot uncover much in the way of detail for Sienna cars.
Also any other advice on Sienna rep's would be helpful?
Thanking you in advance. Regards Phil.