Well the C30 is of course one ton it should be bigger I think. I know on the newer ones the one ton stuff is bigger and heavier made. Is it a 5 lug truck Carry the part with you and match it up if you think it is 80 C10 ask for that and see how it matches. Those parts are the same from like 73 to 87 I think I haven't worked on that body style in a long long time. Good luck to you and welcome from east AR. I hope you don't buy my cab from my guy up there[he was supposed to bring it to me months ago]
