54;
1)The JY is the best place to find the German front pieces.

2) I have sold my VW, FWD racing book all over the World. As such, I talk to all of the racers. We look for failures to alert other racers.
The Hubs from China can fail.

The Mk 1 hubs will fail .. just a matter of time.
Boring them oversize to dasher bearings seems to be the standard op. It is not legal for IT. Break one at speed and most upgrade the hub..

The spindle/upright/ bearing carrier, has never failed. Any of them.
The OE ones are forged. They can be bent at the steering arm and the strut mount area. Many are bent intentionally to correct bump steer and camber issues.
My Circle burners have had the wheel stuffed back into the front seat, without the hub or knuckle failing .

The post 88 Mk2 has the larger bearing/hub. They will go 50hrs between renew. Adding lots of brake ducts increases this run time also as does a low brake use track.
The Mk 3 knuckle may fit the 240mm brakes I dont know.
Removing the seals of the bearings, pumping in Mobil one synthetic grease will double or triple your normal fail time.