Hello all, my name is Lois and I am a newbie. I am trying to see if anyone has installed a 5.3l into a 2000 body style Impala. I have installed 3 3800 series II engines, non of which have been successful. I have had shops do this for me as well. They have falsified information and I am tired of dealing with them. I will attempt to do this myself after gathering some information. Thanks in advance!!!