Will 1994 SW Legacy fenders fit 1990 model?

assuming it's a 1990 legacy then yes. if it's a loyale or some other EA/ER series then no.

So 1990 Legacy thur 1994 is the same for front fenders?

I'm not positive...the headlights and signals are different, and the corner of the headlamp housing extends into the fender. it might be the same, but I would have to really check

So 1990 Legacy thur 1994 is the same for front fenders?

edit : no (was yes), see below

Only 89-91 Legacy fender's will work. 92-94 Legacy's had a facelift.

The side moldings are different (side markers on the black molding on the 92-94's) and the side markers were more horizontal than on the 90-91

 

So you CAN bolt em on... but you have to change some other stuff to make em work. Generally not worth it.

The quick and simple answer is no.

 

You essentually have to change the entire front end (hood, lights, grill, bumper beam, bumper skin, etc) to use the 92-94 fenders on the 90-91 MY legacy.