I remember every detail of the ‘92 Tequesta I got back in September of that year and the 3 snow white Avalanches sitting beside it in the shop, just identical to yours. Wish I knew the difference in Suntour vs Shimano at that time too. The U brakes worked so well and it was super cool to have different brakes front and rear. The non-tapered fork legs were bizarre and new. Aahhh, pure nostalgia right there, Northernlight.
The stem you have looks a great deal like the creaky 120mm reversible GT offered in ‘93, yeah? I still have the original Tequesta thru stem if you want it. It’ll need to be painted, but the price is right.