coolant elbow or the water pump.

you have one elbow at the lim to the alt bracket, they break and leak, your year has a another cast elbow with a o ring on the alt bracket, that o ring can fail and leak.

the water pump, car off, with two hands grab the w/p pulley then push with one hand, pull the other, then back and fourth, if you feel play the pump is bad, it leaks from under its snout out the weep hole there.