Front Drilled/Slotted Rotors with Calipers

I purchased a front brake kit for my 68 Dodge Charger. The kit consists of A-body rotors and calipers. I'm asking $200 for the slotted & drilled rotors, calipers, and stainless steel brake lines. The master cylinder in the photo has been sold. Kit will fit most applications, as long as you have A body spindles. Kit was installed and made a few laps around the neighborhood. Still in like new condition. I decided to go a different route up front.

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Are the rotors the 11.75" or the 10.875" ?