Hello everyone!

I'm wondering if anyone has any information, about Power Engineering cam covers for the CVH engine? Here's a few examples:
This one i found on eBay, a little while ago...


...and this one i found on the internet...

...and this one is mine...

...but apart from that, i've drawn a total blank. I've searched the forums, magazines and the internet in general. I'm wondering how rare they are, as i've never seen another one "in-the-flesh" apart from mine, at any of the events i've been to? I thought they might be part of the Power Engineering System 2 1.9 CVH conversion, but i've seen a couple of them and they didn't have this cover fitted?
Any help, pictures of others or information, would be greatly appreciated!
Take care,

Dean