How are you going to mount the blazer rotors to your hubs? I have been trying to figure this one out and pretty much came to the conclsuion that by the time I bought or made brackets, had rotors drilled or machined and then gathered up the hardware, spacers and brake hoses, I might save $50 off of CPP's kit.
If the rotors aren't drilled spot on, you are going to have a huge imbalance of rotating mass.
Based on Lonnie's input, I'm now reconsidering, but I'd bet rotors from FLAPS or Rockauto are also made in China, at least the ones under $40. I'm pretty sure they use the same camaro caliper for 5 or 6 lug kits.
