Was looking at the 21 brembo upgrade but was seeing it for around $2k. Got a link for the $1000 price?
POWER STOP 162173 Brake Pads
Z16 Evolution Clean Ride Ceramic
Auto Parts for Your Vehicle at Reliably Low Prices. Fast Online Catalog. DIY-Easy. Your Choice of Quality. Full Manufacturer Warranty.
www.rockauto.com
(This comes in a 4 pack, only order QTY.1)
GM GENUINE 1771270 Rotor (13.6" Diameter)
Non Drilled/Slotted
Auto Parts for Your Vehicle at Reliably Low Prices. Fast Online Catalog. DIY-Easy. Your Choice of Quality. Full Manufacturer Warranty.
www.rockauto.com
(You will need to order Qty.2)
M14 Stainless Steel Flat Washers
(You need QTY.4)
For the calipers these are going to be a little challenging to find. I ordered mine through a GM auto parts center, local to me. They had a master system, that could check every auto parts store, GM dealer, and GM warehouse. They found my calipers in stock two states away, and had them shipped to their location for local pickup.
You can always try a local dealer, but they will be expensive. I paid $80 a caliper.
Rockauto gets them in stock randomly, but they sell out fast!
or you can try Stockwiseauto.com they say they are in stock, but don't show pictures. so I cannot guarantee this is a good source.
ACDelco 172-2882 Disc Brake Caliper (Left, Driver Side)
ACDelco 172-2883 Disc Brake Caliper (Right, Passenger Side)
Alternate Caliper Part Numbers, Try: 13536579(Left) and 13536580(Right)
(Verified by a subscriber)
ACDELCO Caliper Mounting Bolt
Auto Parts for Your Vehicle at Reliably Low Prices. Fast Online Catalog. DIY-Easy. Your Choice of Quality. Full Manufacturer Warranty.
www.rockauto.com
(You can re-use your stock bolts. These are if you want to switch the factory T55 bolt out for a 18mm Hex head bolt. Which is less likely to strip, un-like the T55)