So this wet weather and my ae71 wagon don't agree with each other and I ended up spinning out and landing my drivers side rear into a gutter the ma61 wheel was ripped in half and the rotor and that is only half connected to the axle, what upgrades are available, parts needed etc?

I'd be checking for structural integrity before rushing into buying bolt on replacements, your car may never drive properly again.

I'd agree with Clapped Out. The car could be a lot worse then what you can see. Bent rails, bent frame, broken welds, could go on. I'd be getting it checked before anything.

Cheers I'm going to bring it down to my factory tomorrow morning and check over it!