That's a non-sequitur. One modification not being legal in your jurisdiction means nothing for other modifications. If you want to get more than a few thousand

That's a non-sequitur. One modification not being legal in your jurisdiction means nothing for other modifications. If you want to get more than a few thousand miles out of a car, you'd better be willing to modify safety-critical parts of it by replacing the brake pads and tyres - plenty of people do that themselves.