Popping and clunking going straight and not turning and it's not your end links.
Trying to think back to my race land experience. Front end clunk you either didn't torque your strut mounts down proper or you may have included or excluded a washer between the coilovers and the strut mount.
Unbolt one end link if you want to eliminate end kinks as your culprit. Easiy way of knowing if your preloaded from longer end links than you need. Don't drive like a maniac but try to generate the clunking again. Still clunks and it's something else.