"Euro" 5 x 7 speakers
Vintage Alfas, Volvos, and I presume other European makes came equipped for speakers that utilize a 4.25" square hole pattern, but are oval 5 x 7.25 in shape. One can buy speakers with the 4.25 hole pattern today, but because they're all round they do not necessarily fit the factory mounting surface. Anyone know 1.) what I'm referring to and 2.) what a modern substitute for these Euro speakers might be? Thanks much!