Alright guys, new to the forum, this place looked like the place I needed to go to find some prof opinions. I have a 2002 Chevy 4.3 5 speed truck. I am wanting to this summer either put the 5.3 or LS1 in my truck. Some basic things I need to know, will either of these engines bolt to my tranny? Will the LS1 even go into my truck. Any help guys is muchly appreciated. Thanks for the help, Chris