Ole Miss Panhellenic doesn't have a guide out but their Recruitment page has some honest advice regarding GPA
"GPA Zones: Green Zone = your options are not likely to be limited based on GPA. Yellow Zone = your options are more likely to be limited by GPA. Red Zone = your options are very likely to be limited based on GPA.
Green Zone (aka Safe Zone): 3.0+
Yellow Zone: 2.8-2.99
Red Zone: 2.79 and Below"
http://dos.orgsync.com/org/umgreeks/npcrecruitment
The also have a Pinterest account which has examples of what PNMs should wear for Skit, Philanthropy and Preference days
http://pinterest.com/olemisspanhel/