Yeah, I do hear what you're saying Sean. The thing is, I'm not planning on tracking the car and it has no shield whatsoever at the moment so I reckon that those will be better than nothing.
Once it's running and I've had time to spend some hours on the road in different conditions I'll know if I need to do anything better. I hope not because I like the fact that the shields I bought are subtle and not look too imposing under the bonnet.