If you follow the link, there is some discussion. I think the rusty part is stock, the painted parts are 911 and the white parts are custom.
There is also mention of
a double A-arm bolt-in unit. It's $3K!
I've heard of Golf owners replacing the steel front subframe with an Audi TT part in aluminum. The Blackjack Zero puts a flat four ahead of Golf GTI front suspension.
