I have kick panel speakers in my 68 vert. Got the ones with speakers from MU. If you get kick panels without speakers and add your own be carefull. Most good speakers are too deep and therefore need front mount with added protrusion. Even the low speaker gets in the way of windshield washer foot pump and the headliht dimmer foot switch. If you have a manual tranny it can get really busy by the kick panel speaker.
My 68 is auto tranny, love the sound from the kick panel speakers. Plan to add a small subwoofer in the trunk in the near future.
If I had lots of money I would have done the 68 Couger type kick panel speakers.
My '64 1/2 vert. Ordered May '64. D code 4 speed, handling package, caspian blue, accent group, Ford blue manual top.
'68 vert. driver. Owned since Apr '78. C code AT, AC, PS, P disc B, PT lime gold, standard black interior and top. NOS RF fender and left quarter.New top and folding glass.