Even if you can't find a Corvair specific patch panel, find something that has about the same arch, opening width, and offset, go with it. If you want a unique look, take a look at a pair of '68-'69 Maro patch panels...... Nice radius, nice opening size, and a nice flare to it if you want to go a bit wider on rear tread. Heck, just get the wheel openings that trip your trigger, whittle away everything that doesn't fit, add a dash of ping & ding, weld in place!!!!!!