I have an 88 IROC with 4 wheel disc. Saginaws. When the car had it's original pads, it stopped pretty good. Since I've had the local shop change the pads, the car is now harder to stop. I think they used cheapo pads that don't have as much grip on the rotors.

What pads should I get for these stock brakes that will give them some grip?

FWIW, I just flushed the brake fluid and refilled with Valvoline synpower fluid.

Thanks.