Well, I have all the parts (water pump, timing belt...etc) I was wondering how hard is it to do it yourself? I know it's going to take awhile, but me and my buddies want to try to do it ourselves, so do I need to see the engine or engine bay diagram first to start the job? Any inputs or suggestions would help....TIA

 

just remember that the ls430 is an interference motor. make sure you line up the timing marks correctly and turn the motor by hand before you start it up. Being hard depends on how much you know about what you are doing. I don't think its hard, just takes some time if its your first one.