Thetford Toilet Cap Parts

I need the cap and splash guard for the Electra Magic toilet. Thetford has an assembly that costs over $300 that includes these parts but they won't sell them separately. This is the part in the back left corner of the top of the toilet.

Do you have any suggestions on getting these parts or retrofitting some alternative?

Alternatively, would anyone be willing to take these two parts out and take a photo ? I may just retrofit it. Will post photos if I do :-)

Thanks,
Matt