Giant ATX 870

I have a 17.5 in Giant ATX frame (no fork though)
and two mountain bike wheel sets (one with a 8 speed casette)

I think the bike dates to 1997 (http://www.bikepedia.com/QuickBike/BikeSpecs.aspx?ItemID=63670&Type=bike) and had mostly Deore LX components with STX crank and Shift levers.

To the point:

Does anyone have an old “Gruppo” available (perhaps from upgrading or something) i could retrofit onto this frame? I’d of course pay…

OR conversely,

could anyone need this frame?

Reno