are all gs forks the same?

[java110]

hey, i got my hands on an 05 500f that some kid smacked a car with. the forks are bent and the tripples are broken/ bent... i snagged a set of forks on ebay for $19.99!

every post i see says that all the forks are the same at 37mm (i think)... but i also noticed someone wanted a set or 2004 plus forks...

my question is: is there any difference in the forks at all, and would it be possible to use the 1990 upper tubes with my 2005 lowers in case the ebay junk is trashed?

[dgyver]

Correct 37mm. All of the external dimensions are the same. I do not know of any internal changes except than stiffer springs were added, maybe 04.