F-Bobby

i was lookin into gettin a 4th gen rear end for my car and i was checking out the prices of 4th gen brake parts. and god damn these things are expensive. i was wondering if anyone knew of a place to get some ls1 rear brakes for cheap. wether they are gettin sold off an old rear end or just a place that sells them cheaper then the rest. or if its worth it to try and keep the 3rd gen brakes and mount them on the 4th gen rear end. now keep in mind that i have a 9 bolt so i dont know how interchangable the brakes are between the 10 bolt and the 9 bolt.