Ok, let me put it out to you experts. I am in the slow process of restoring an 87 k5 in ok shape, 70, 000 miles, 350 TBI, silverado package, 3" exhaust with a Flowmaster 40 series on it. I love the friggin truck. Problem. . .I took advice from someone I know and put nice expensive cross drilled rotors on the front with Hawk racing pads, and I put rebuilt calipers also. I shot thru those pads extremely fast, and any other pads I have put on it also. I always thought the brake pedal was low to the floor, so we changed the master cylinder and flushed out all of the fluid, brakes still feel the same.Changed the rear drums without any changes. I couldn't lock the suckers up if my life depended on it! The first time I realized that that I was having problems with them was when I actually rear ended someone. A trusted Mechanic friend told me I should go back to stock rotors in the front, but while checking out the brake system, he noticed that the rear brakes has no access hole to adjust the rear cylinder. He thinks we have to cut a hole in the rear dust shield to get to them. Without taking a loan just to fix the brakes, maybe you K5 vets can give me a little insight/guidence/direction as to what we should do. Thanks in advance and I'll try to answer any questions and post updates as we get going on it, going to try to start the weekend after Memorial day. SALUTE TO THE VETS!!!