I thought about this one too, I have not had brake fade, even from 90.
I do really like the looks of rear disc and larger ones would look great.
I think it adds weight and drag.
If you get it, let me know if it affects your mileage and if you think it is worth it, I think it is a couple of clams for the kit.
I would say do it if you are going all out!! post the pics!!
Hey Lowndex, where in N Ca are you? I am between Sac and Lake Tahoe on I-80.