hmm, so the mk3 head has 5 bearing caps? learn summat new every day 
Yes I believe it does 
Tell you guys what, I have a spare PB cam ground down in the garage I will post it up over the weekend.
The bearing I ground down was still rock hard underneath, which leads me to believe it is through hardened.
Either that or the case is quite thick as I recall I had to grind approx 5mm off the od to match other bearing dims.
Could have sworn it was 4 caps but hey thats life.
As stated never rr'ed the car with the cam in but it is quicker than the average 8v, have got a few other tweaks so it may be the whole package as opposed to a Wonder cam

Car passed MOT fine last time around with no issues, lets see what happens next April although I think the Tin worm will be its coffin nail not the Mk2 cam

PS mines an ADY but AGG is the same....... Wayne?

Piture of Khare gaying out with 8v cam shaft, position 4 out of 5 is the one to be ground down
http://www.golfgtiforum.co.uk/index.php?topic=115828.msg1079143#msg1079143