i have a 2000 s10 with the 4.3 and its a five speed. i was just wondering how involved this job is. i was thinking about rebuilding the motor piece by piece with the bottom end being first. and another question is that when i turn my truck off it knocks a little bit and when the a/c is on it knocks so much louder than at idle but when its off you can barely hear it at idle, also when i am slowing down to turn into a road or park it i can hear it knocking a little bit als. with about a second interval inbetween each knock. any ideas would be much appreciated. i kinda thought rod bearings thats one of the reasons why i was going to do the bottom end bearings.