Wilwood front breaks 13.06 or 12.19 Rotors?

[JGross]

I'm planning on upgrading the front breaks on my 65, I already have junkyard discs but the stopping power isn't where I would like it to be. I will be upgrading to the Wilwood 6 caliper kit but I'm going back and fourth between the 13.06 inch and 12.19 inch rotors. I like the 12 in. rotors because you can get soiled rotors but I want really good stopping power.

Do ya'll think there really is any significant deference in the stopping power between the 12 in and the 13 in rotors?