Skoda 100 (or possibly 110 or 120s) Race Car at Josefuv dul Car Show, Liberecky kraj, Bohemia(CZ), 2015

Although it's possible this is a factory-produced Skoda 120 S Rallye, the lack of a front spoiler (and simply the mathematical odds) suggest that this is actually a Skoda 100 or 110 that's been race prepped. I don't know a lot about it, but obviously if anyone knows more, then put it in the comments.