"........Now if I can find an 11 1/2 inch rotor with 4.75 inch.........."


Not saying they aren't out there somewhere, but what you have looks like Ford rotor that started out as a 5 on 5" bolt circle. You may be down to buying Ford rotors (1977-1978 Lincoln Versailles ? ) and taking them to a machine shop and having them redrilled for the 5 on 4 3/4" bolt circle.

If you're brave (cheap) you could bolt the 2 drums together (hat to hat) with the 5" bolt circle and use the 4 3/4" holes as a drill guide/template to drill the new rotor.


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