Hi, new here. My wife has a 99 Z28 and the guys at Firestone just informed me that the oil pan plug stripped the threads in the oil pan. They say they found a heli-coil in the female threads. So, it seems who ever did the last oil change stripped it. I am not familiar with the procedure for replacing the oil pan. Does the entire front clip have to be dropped removing the eng/trans, then separate eng/trans and then remove engine from front clip, then remove oil pan. Or is there some way to remove/replace the oil pan with the eng/trans still installed? I have read some posts that mention lifting the eng while still in the vehicle, does this trick apply to a 99 Z28.