can you post up a link of them?
I'm running GPX forks on my 140, 735mm total length...
i've been very happy with their performance and quality for the price. had them for a year, they havent started leaking, and while it doesnt get hammered over 50ft ramp gaps, i am a bit of a fat bastard, and they have held up very well so far...
assuming they are the same you are after, of course...
the other thing to consider, is the length of fork you have already... if you have 635 or 660mm forks, the 735mm GPX's will be too long, and you will end up with a chopper...
The GPX's are for midsize bikes..