waid786

I am currently running stock front brakes in my Sonoma/S10 with 5.3 / 4L60E. In the rear, I have Blazers 8.5 rear end with 3.42 posi and disk brakes. The C4 rotor is 12" and my stock rotor is 10.5" and seems to fit my stock 15" wheels which I want to keep. I had some junk parts laying around and did some test fitting and looks like C4 stuff will work.

Anyone running C4 brakes under 15" wheels?

Is it going to make a noticeable difference with 12" rotors?

Thanks