If its in good nick, then by all means post up in the appropriate section (Tech) as this is the for sale section,
But take some good photos from several angles and orientation of the parts, measure what you can (especially the mount brackets) and try to make a "Blueprint" of it to illustrate it. If good enough one could make new ones from it. (Parts are only as good as the print). I have manuf sources but what they ask for now is 3d scans, as that is the final word in manuf these days.
But the reality is, you can only approximate a reverse engineered part if you dont have an example in your hand. (Close enough is good enough) There is 2 things to remember when dealing with 60-70 year old parts,, most were wildly inconsistent to begin with. (Show me 10 Norton Featherbed frames and Ill show you 10 different layouts on a jig). #2 unless its new out of the box, its probable that it could be modified, tweaked or different slightly than the identical bike parked next to it, Not to mention parts bin engineering where stuff was changed mid stream in production.
As i said, this is a very low production endeavor, and very low demand but I will be producing some other hard to find parts in the next 12 months, and not a big deal to add this to the "To-do" list.
My other airbox project is some Q racing air boxs. I have 2 examples and there is decent demand for them. Currently working on some modern machinery airboxs/filtration and slow going with some of the testing.
