rnutter,
I used well nuts and neoprene backed washers with 10-24 machine screws to mount mine to a cage.
Check here for well nuts and washers,
http://www.mcmaster.com/
I noticed that Everything Carts sells a clip kit only for the Club Car and Ez-Go. Most of them use the same size square tube for the top frames so, these may work.
http://www.everythingcarts.com/c-62-windshields.aspx