Its a 2006 GMC w a 4.8L and he is wanting to do an LQ9 swap. Correct me if im wrong on these

1. A LQ9 would be an easier swap because he has a 4L60e and the lq4 was mated with the 4l80e.

2. Will everything swap right over? Engine Harness, fuel lines, engine mounts? I believe they will all work right?

3. This should be a fairly easy swap right?