Mystery Pods

[Myumi-2]

The 1972 CB750 im restoring came with an unusual set of air filter pods.  Ive not seen these anywhere else.

Just wondering if anyone knows the provenance of these pods.

The pic does not show the back, but they attach to two Carbs each.  The Brand is Lynx.

I've got the bike running to the point of improving the air/fuel mix and was also wondering if anyone has experience with these pods in relation to jetting.

.

[Polymer-2]

Those are Lynx Ram Flow air cleaners.
http://www.lynxcorp.com.au/main.php?idx=ourproducts

[Myumi-2]

That is the one.