Trying to find information on Fried Q3 Signature speakers.

I'm restoring a pair of old Fried Q/3 "Signature" speakers. Mainly, been trying to find the correct size for the surrounds of the woofers, which need to be replaced and have not been able to find much information on these. Does anyone here have any info on the woofers and what size surrounds are correct for these? thanks in advance...

Jim