Well after finally accomplishing my wheel dilemma on my 70 C30, I took it for its maiden voyage.... Had to run an errand at Lowes....While in the lot, I made a hard left with basically the left rear wheels pivoting and the right rear wheels making the swing...I heard a very unusual tinny clanking noise I never heard before. I drove home with no incident.....The truck has a Posi 4:56 rear.....I double checked the lugs & they were tight...???