You're right - several other companies had the same issue. That's how I ended up with Heacock

The only difference to them is that it costs a little more, because the car is automatically "Highly Modified" instead of just "Modified". (Even with a 150 hp or less shot).

Also, many have severe use prohibitions. I have saved emails from Heacock asking what exactly I could do with the Dart. The rep told me I could go out for dinner, drive to the auto parts store or a repair shop, and even pick up a quart of milk on the way. Just never drive it to work, and keep it in a locked garage.