Help to identify parts - air intake / filter system?

Hi MXfivers, could you guys take a look at these parts which I found in the back of my lockup?

They should be original parts from an MX5 Mk 2 1998 (convertible, petrol, 1598 cc) my ex and I used to have.

I think it’s all the parts for an Air Intake / Filter system, removed when we replaced it with a K&N filter.

Can you help me name them?
Is there anything missing?
What range of models do they fit?

I’ve got more close up pics of each individual part and the codes printed on them - eg BP4W and E8D9 on the outside of the box. Let me know if you want the pictures uploaded here

Thanks so much for any help you can give!

Cheers, EHR

Looks like it’s all there, only some minor differences over the years, snorkel shape etc.

It’s basically just a pipe and an airbox.

Ah thanks so much Andy :grinning:- diagram is especially useful.

So do you mean it would fit all models Mk2 models from 98 - 2005?