I promise you it is not limited to the Camry/Corolla/Civic community, it's just that those cars are very commonplace so its more obvious. I had a full track build BRZ that looked nearly stock from the outside other than the wheels and hood vents, and I loved that car and still miss it. Even in the Miata and BRZ/86 communities where these are designed as cheap, trackable sports cars, most of the community is more focused on cosmetics and adding cheap plastic and chinesium parts to their cars than doing anything that improves driving dynamics.