LOCKS - for 71 Dart ?

Looking for door and trunk keys and locks. Also looking for stray locks for possible parts.

RockAuto sells several
http://www.rockauto.com/catalog/moreinfo.php?pk=944586&cc=1440865
http://www.rockauto.com/catalog/moreinfo.php?pk=44821&cc=1440865
Does anyone have any experience with these?
Thanks, Frank