My father has a 91 stumpjumper . He bought it at the same time as mine . Mine was the team version in a dark purple version with suntour xc pro all over . His is with shimano Dx in black with red decals .
He hasnt ridden it in about 10 years , and has changed nothing on it .
The bike seats in its garage collecting dust , even the tyres are original ( ground control ).
I think the only thing changed are the pedals , i gave him my xc pro when I upgraded to spd on mine .
Next time i go to France , i might bring it back and do a single speed as it is a waste .