I just received an "early" type (74-76) brake disc center, and the RH side fork slider for a 34 mm fork from gggGary. Parts looked great for 40 year old bits, the price was fair, shipping was expedient. So I am a happy buyer ☺
(I may upset some of you now, but I plan on using these parts for a brake upgrade on my 75 RD 350.....
A thinner rotor from ISR, on the XS hub, combined with an alloy reproduction caliper from Economy Cycle,
should improve the braking, while cutting at least 3 lbs/1.35 kg of unsprung weight from the front wheel)