sagging and pulling

Hello everyone, I have an 88 century, 2.8L with 60K on it. It was pulling a bit to the left and I have about a 1/2 inch chassis sag the whole left side (front and back). This week I put 4 new tires, replaced the front struts and got an alignment. It definately needed the tires and struts, so I didn't waste my money,(all orig. equip) but I did think it might help the sag problem (it didn't) and It still pulls to the left a bit . Any suggestions on what to look at next? thanks jag

Struts will not correct sag, in most cases springs are the issue.