Hi Jim,
If you have an intersection fairing, it will support the gear leg Fairing.
Here is my 'fairings-etc' intersection fairing i recently added when i put on the new gear fairing that came from AntiSplatAero!
Before i had the intersection fairing, the gear fairing was held on by pipe clamps at top and bottom. I don't recommend this as there was multiple repairs to my fairing where the clamp was tightened too much and cracked fiberglass. Now my fairing is supported at top by the intersection fairing and by electrical tape at the bottom. (allows some flex)
Dan