Not possible... there never was an S5 with a 4 cylinder engine (maybe you're talking about an A5 S-Line?). The early S5 models had an 8 cylinder engine, the newer ones have a 6 cylinder engine. The RS5 has an 8 cylinder engine (that's why they downgraded the S5 engine when the RS5 came out). And now... back to topic!
Cheers. Looking forward to a patina on the light. An literally yes, they are great books. " Great Books of the Western World" in 53 volumes.