Odds are that there are quite a few people who still don’t know that the narrow-body, non-turbocharged Type 85 Coupe Quattro existed at all. Move outside of the U.S. market, though, and the Coupe GT could be opted with the all-wheel drive underpinnings of the 90 (4000) quattro, resulting in the WRC-winning look without the Porsche 911 price tag. But while generally fans of the B2 chassis can’t be dissuaded that it might just be the best Audi product ever, the reality of owning one of these trustworthy steeds was that they were pretty slow. Dependable, tossable, still fun to drive – but slow. On top of that, the aftermarket industry for the inline-5 was pretty weak. There were some products out there; I had an original Abt header, for example, and you could buy a Schrick cam or briefly a neato Jamex air intake. But the real way to gain power was to swap in a turbocharged inline-5, right? Well, apparently no one told the folks at GTi Engineering in Brackley that: