From what I gather buying a Skoda is basically buying a VW for 10% less. Most of them share the same platforms. I recall you've been very happy with your previous VW products.
We may have seen this one before, but I like the colour scheme on this Manual P5 coupe in the UK:
https://www.ebay.co.uk/itm/1965-Rover-P5-3-Litre-mk-11-coupe/284131392344
Hi Oscar,
If you car is a 1975, it should be D-Jet.
You an tell for sure if you post the first six digits of your engine number or even a photo of the engine.
Bryce