Q's about Rock Shox Quadra 10

[LongBoardLarry]

I am looking at buying a used Rock Shox Quadra 10 for my haro impulse that is about 12 years old. It has a 1" steerer tube and I am a student so I don't have a bunch of money to buy something new. I just want some info before I buy. Was it good? Can you still buy parts for it?
I am also looking at a Rock Shox mag 21.

Thanks