I have a 2000 polo 6n2 with a 1.0 l engine. Is it worth putting a sport KYB shock absorbers and 4 lowering pro sport springs? Or too slow car for this investment.

There's an arguement that it's never "worth" modifying any car. But then doing anything that's fun is probably never "worth" it. If you want to do it, just go for it.

Haha I'm having the same thoughts about a 6n2. To fit a sports cup kit or not.... Hmmm?

I think the same way, only now after a number of years improving the car i can justify £500 on coilivers where as before the car wasnt worth that money

Low and slow... Do it mate. It'll look well.