I was going to make the LS1 rear brake swap on my LT1 based car, and have desided against doing it, so I have some LS1 Rear calipers and Rear rotors that I am looking to sell.  The calipers are used (12,000 miles) and are in excellent condition.  I also bought brands new pad abutment brackets that can go with the calipers.  They are complete with all new slide pins, and rubber boots.  
I am looking to get $75/bo + Shipping for the complete set of calipers/pad abutment brackets.
The rotors are brand new and are Centric brand.  I do not have the part numbers, but you could certainly look them up.   I paid $52 each for them, and just looking to get a good offer for them.  I would return them, but I accidently threw out the box on one of them, and they will not take them back without the box.
contact me at joel_adams@charter.net with any questions.
Thanks,
Joel