Hey guys, hope y’all can help. I have a 1977 C20 Suburban Silverado, 2wd, auto with a 454 and the tow package. I went to replace the pads, rotors, drums and shoes. Every parts store I go to as well as online tell me the only brake rotors are 8 lug drums/rotors. My truck has 6 lugs front & rear. Of course not being a 17 digit VIN, no one can decode it. The truck was built in June 1977 so it’s pretty close to the 78 model year, if that matters. Can anyone tell me what I’m supposed to have, or what other 6 lug vehicle might match up? Thanks for your help.