[DeTomaso] GT-5 parts - where to find a frog eye head light bucket and handbrake add-on calipers?

[Jesper Sahlberg]

In preparation for a head light conversion project I need a passenger 
side "head light bucket" for a 1985 GT-5

I am told it is going to be hard to find any parts for a factory GT-5 so 
can anyone tell me where to ask/look for parts?

While we are at it my car is also equipped with a hydraulic parking 
brake system and I am also looking to convert it back to the original 
manual / cable driven handbrake calipers that used to be bolted on the 
rear wheel calipers.

Any advise on how to source these parts would be much appreciated.

Cheers,
Jesper