After downhilling this year on a Giant AC1 I decided to purchase a full on DH frame. I bought a friend's Cortina DH-Extreme because of the great the condition it's in.
I'll be slowly building it up over the winter. I'm still undecided on the fork but I think I'll go with a Shiver.
Hope Bulb Hubs
XTR bottom Bracket and Cranks
XT derailleur and shifters
Chris King Headset
Still have to decide on a few more items.
Here is the frame: