There's no real trick, it's pretty straight forward. You may have to remove the header, but I've heard of people doing it without that step. Make sure you don't get any kind of contaminants/debris in the oil pan before you put it back up. I'd clean it out nicely with some brake cleaner. Also, don't overtorque the nuts, you don't want to break any. Refer to the manual for the tightening sequence.