I have purchased a turbo engine bonnet with raised vents from eBay but it appears there are parts underneath it

(Engine side) missing it looks like a frame or something should be screwed on underneath before it is bolted to the body hinges, also the rain covers are missing too, question: how can i find out the part numbers, i've looked in my MR2 tech manual CD but it shows only assembly, adjustment etc.

Does anyone have a part number manual

/ exploded diagram showing this? Thanks