Really cheap!!!!Even if they only last a year......?
http://www.ebay.com/itm/2-Front-Stock-Replacement-Brake-Rotors-and-4-Pads-/300709498629?pt=Motors_Car_Truck_Parts_Accessories&fits=Year%3A1969%7CModel%3AEldorado&hash=item4603aecf05&vxp=mtr#ht_4511wt_936
One good hard stop & your Caddy will vibrate like my sisters old steely dan!
Rene