Transvision 7 inch kit project

[dtvmcdonald]

I'm still awaiting arrival of the shipment of the axial film caps, which are most of them.

In the meantime I rewired the AC input, adding a 3 wire cord (the original was near getting crumbly), adding an
ac line fuse, and a separate lower amp fuse just for the HV.
I rewired the interlock (which was bypassed) so it only is on the HV.

A question: where do I get a replacement old-time paper cone "6 inch" speaker? The mount holes are a 5 1/4 inch square.
Its permanent magnet type.