I've got a 98 Frontier 4 cyl 2wd with some serious sag in the front drivers side wheel. The wheel well is almost on the tire to the point when I go over dips its rubs a little. Also when I go over anything thats not real smooth it has a rattle coming out of the front corner. I ordered a ball joint last night thinking that was it. Is the ball joint all I'll need to replace? Could it be a control arm instead or also? Does anyone know of a turn by turn right up on how to replace it? Is there anything other than sockets, hammer, or screwdrivers that I'll need? Thanks for any advice.