How to use CiviCRM contact data latitude and longitude in drupal gmap formatted view
There is a good recipe for using leafhttps://civicrm.stackexchange.com/questions/12862/how-to-put-your-civicrm-contacts-on-a-leafleft-map-in-5min if you are happy to slightly switch track. For D7

Also you will get more Civi eyeballs if you post on that channel, and while I appreciate this is a 'drupal' question, more civi folk use drupal than drupal folk use civi ;-). Good luck