If you can fit on a 16.5" frame there is (was?) a Scapin OTO on eBay. Buy it and then build up with the XT kits listed above. That is what I did and it is great!! Nothing beats a good steel ride. My Scapin hardtail weighs more than 5 pounds less than my Trek Fuel 90 weighed. A HUGE difference in handling and so much better riding.
If the frame is no longer on eBay you might check with
matt@redlanterncycles.com to see if it is still available. He is the Scapin importer and it was his listing for a new leftover '02 frame. He can send along pic's etc., if he still has. Good luck!!