Thanks. if I can get them to work, then I'd want to use them indexed with 8 speed. I've been checking sheldon's spacing cribsheet, and I can't see why they won't work:
shimano 7s has 5.0mm c-c between sprockets, while shimano 8s has 4.8mm. suntour 8s has a mixture of 4.8 and 5.0mm. since shimano 7 and 8 systems generally work well together, I see no reason why the xc pros won't work well with a shimano cassette.
I think I've got a couple of shimano 8s cassettes (road ratios, but the spacing is the same) so I'll give it a go and see what happens!
I'd be interested to see if you can get this to work as i am contemplating going down this route with Suntour thumbies, i might however try and source a Suntour rear mech but will no doubt be a Shimano or Shimano derivative cassette
Steve. The kona you borrowed had Suntour xc pro shifters, xt mech and cassette. All work fine.