suspension clunk

my truck has developed a suspension clunk. from what i can tell, it appears t be coming from the front. When the noise first appeared, i thought it was due to my broken leaf spring. after i replaced the springs and had 5100s installed all around, the problem still persisted. over the weekend i noticed some play in the passenger side sway bar link, so i replaced that. the clunk is still there intermittently. i checked the other link to make sure there was no play, but it seems solid. any ideas where else i can check?

2005 base 4x4, 94.5K miles. just greased u-joints, replaced all 4 shocks and rear leaf springs. the clunk seems to happen first drive of the day. when i come to a stop sign, as the truck is nearing its complete stop you hear a clunk that appears to be coming from the front end. after that one clunk, i never hear it for the rest of the day. its like, after it sits for a long while (more than a few hours) it happens.