2004 Pontiac Grand Am Clicking/rattle noise over rough road

The front, right side of my car makes a series of rapidly clicking/rattling noise when driving over rough road or turning right over bumpy surface. Thought it was the CV joint or the wheel bearing, so I replaced (with help from my mechanic friend) the front, right CV driveaxle and hub and bearing assembly. But the series of rapidly clicking/rattling noise is still there. My mechanic friend inspected the suspension, and said it's all good. I know it can't be the strut because the clicking/rattling noise is made in rapid series, not just one or two clicks, especially when turning right over bumpy surface. Any suggestions what the problem might be? (This is a hard question by the way because my mechanic friend is stumped)