Sure!!!
I just upgraded mine too but in my case it was from a '03 Rock Shox Judy XC. As you said, the difference is night and day and it is very responsive. I am very pleased with my purchase, the performance is very similar to a Fox but at half the price. Just an unbeatable deal..
It is a tad heavier than other suspensions, but since I am not a weight weenie I couldn't care less.
Enjoy your fork,
Ricardo