Installed aluminium spindle to right front of my car today. Still need to do the other side tomorrow. The wheel bearing was a pain, everything else was easy.
Just had to make sure the nuts and bolts were the correct spec for these aluminium parts. The outer tie rod nut, 3x ball joint nuts, ball joint top nut, and the two 21mm brake bracket bolts were all different part numbers that were required.
100 N.m for the three nuts holding the ball joint instead of 60 N.m
200 N.m for the two 21mm brake bracket that bolts to the spindle.
Extremely Rusted Spindle
Scrubbed the Mating Surface Clean with a Wire Brush
Comparison of Aluminium Passat Spindle to stock GTI Spindle