I "googled" images for the Opel Manta and Mercury Capri and found the following. They do look similar, but the shape of the back window is different.
Mercury Capri
3130
Opel Manta
3131
...
Type: Posts; User: ew1usnr
I "googled" images for the Opel Manta and Mercury Capri and found the following. They do look similar, but the shape of the back window is different.
Mercury Capri
3130
Opel Manta
3131
...
Is that an Opel Manta in the background?