hey charlie ,
if you want to buy forks off ebay,make sure you measure well
thickness of the outertubes could be different ,
also if you take a 94 by ex.the calipermountholes are way diff ,then your 90 caliper
also the frontwheel axle is diff in some m.y. it became thicker through out the years
also the axle clamps are diff in 88/89 they had one side clamped ,other side is a hole.
and from 91 or so both sides clamps
beyond 94 i don,t know cuzz my newest is 94
succes