Fixing rear wings?

[skov]

Just wondered how folks are fixing the rear wings on?
Is there a 'standard' way of doing it?

[deezee]

I marked the rear wings up, then where the flange met chassis rails I fitted rivnuts. Where the flange didn't pass over chassis rails the other fixings are just bolts through the bodywork. About 6 bolts for each arch.

[ayjay]

I used big fat pop rivets with washers on to spread the load.