Clunk in front end!! Need advice!!

I have a 1991 Oldsmobile Eighty-Eight Royal that has a bad clunk in the left front end when I turn right or left. I replaced the sway bar last year but didn't apply no grease because I didn't know if it was needed or not. Also the long bolt looks like it could be alittle loose too. If neither of these aren't the cause of the clunk, could it be the balljoint or tie rod? I need to get this fixed before it gets to cold out. I have to do repairs outside in my driveway.