So as an update, I found NOS suntour XC PRO hubs and MD 7 cassette for below 100 euros for all (will post pics soon!).
Trouble is the cassette is 11-24! Finding 28 or 32 tooth cogs in Suntour cassettes I understand is very difficult.
One thing, I was curious to try from Suntour as well is their headset. These ones are trully rare to my understanding...especially the XC PRO with the grease guards. Do they worth the effort for continuing hunting them?
Any opinions?
You will not get them, that is a 7 speed range. Only one.
To get 28 you need 8 speed (they stuck a 28T extra.
It's all part of the MicroDrive, the front chainrings shrank to compensate as there was suddenly an 11T at the rear, before that it was 12T minimum.
This allowed them to shrink the 46/48T ring to smaller. (new BCD needed)
And the middle and granny followed (smaller BCD)
The granny ring being 20T now, rather then 24/26T, means the big cog at the rear doesn't need to be so big.
Hence everything shrank in size and weight and we have MD.
Shimano then copied it, with tweaks the next year.
Suntour problem was the cassette were not compatible with anything else, if they use a Shimano style setup everything would have been easier.
Locked into a new standard hell.