The second time I looked I found an F1 airbox in the storage totes, it was heavy and felt like an air filter was in there. I had to heat a socket to melt its way in to get the stuck female bolt out of the stripped plastic.
It was mostly a mouse condo inside. Lots of corrosion, mouse mess and chewed up filter media.
I may still use the older one, its more user friendly. I have two F airboxes and only one hollow bolt. DaNG.