Yup, that looks like crap. But you knew it was a big piece of non-OEM crappy blue plastic when you ordered it.
Or is it just the plug wires you don't like?
Turns out 2f valve cover grommets work for wiper motor packing too.
I dont recall what if anything was used for the interior fasteners for either a packing or a spacer, as i don't think the gap was quite as large with the oe rubber gasket.