Is modding a Toyota Belta sacrilege or the ultimate sleeper build?

Because it's reputed to be reliable and practical, many people have made the Toyota Belta a daily driver. But some car enthusiasts see the potential in the Belta as a vehicle to be modified. The question is whether altering a Belta is a good way to make an unexpected performance car, or is it against the purpose of the vehicle? The case for modding is that the Belta is obviously intended to be a sleeper build, with an unassuming exterior but a hidden power. However, purists might say that the Belta is at its strongest in stock form and that any tinkering with it will lead to a drop in reliability and efficiency. This conversation also pertains to larger themes within car culture concerning whether or not to leave a car untouched, as it was originally designed, versus making it your own, in accordance with your own tastes and performance aspirations.