What are the biggest modifications that make the most difference in Viper performance?

Dodge Vipers are a popular car to modify, and you’ll find as many debates as there are owners and enthusiasts about which upgrades give you the best bang for the buck. Most of these discussions include weighing engine mods for more power versus handling and brake upgrades for better overall performance. However, some say that the Viper's stock power is already plenty, that suspension, tires and driver aids give better real world results. Some argue that the whole point of having a Viper is to unleash the full potential of it's V10 engine. It often discusses the difficulties of altering an incredibly high performance vehicle without upsetting the car’s fine balance or reliability. They talk about performance gains, but more than anything they talk about how various mods change the character and drivability of the car. This then leads to philosophical debates about whether or not to keep the Viper's raw nature intact, or to embrace modern performance technologies.