Hi Matg,
More important as you mention the metrics for the bleedes. DO USE Gierling Front? ==> Yes, stock Pantera ones (same as Fiat dino)
What in the back the Peugeot type one combined pistion? ==> Yes, stock pantera ones (same as Peugeot 504 coupe and 505)
You can find brake parts for pantera at dinoparts.com (germany)