What is up with your cores, rusted hulks? Wonder if a core charge can be doubled if you turn 2 in, ya know? Rockauto is great! Early Mustangs used the same KH caliper IIRC.
No there not rusted hulks lol but each one has atleast one piston froze
The two I have on there now work ok but when I start driving and racing the valiant I'm going to need that stopping power