I'm sure they do but I believe the internals i.e the springs & spacer tubes are different sizes to later ones,so not just a case of changing the caps.
Correct, plus oil levels are different too.
Personally though, when i had the adjusters on my forks (swapped for older ones) i found them to be quite useless, and had them wound right in at the firmest setting.
Changing the fork oil to 15w instead of 10w will markedly improve the front end feel without a doubt.
