Here is my newly built Klein Attitude. I picked up the frame on Ebay. It is a post Trek Klein, but I still like it!
I think it is a 2001 frame.
Spec
Frame: Klein Attitude 2001
Fork: Rockshox Judy TT
Stem: Unbranded
Handlebar: 3T Riser
Grips: Lizard Skins
Brakes: Shimano Deore XT V Brakes
Brake Pads: Shimano Deore XT Pads
Brake Cables: Shimano M System
Brake Levers: Avid
Shifters: Shimano Deore XT 9sp
Front Derailleur: Shimano Deore
Rear Derailleur: Shimano Deore XT
Derailleur Cables: Shimano SIS
Cassette: Shimano Deore XT
Chainset: Shimano Deore LX
Bottom Bracket: Shimano Deore LX
Hub Skewers: Deore XT
Rims: DRC MT19
Hubs: Shimano Deore
Tyres: Ritchey Z-Max
Saddle: Selle Italia Flite Titanium
Seatpost: Unbranded
Seatpost Binder: X-Lite
I think it is a 2001 frame.
Spec
Frame: Klein Attitude 2001
Fork: Rockshox Judy TT
Stem: Unbranded
Handlebar: 3T Riser
Grips: Lizard Skins
Brakes: Shimano Deore XT V Brakes
Brake Pads: Shimano Deore XT Pads
Brake Cables: Shimano M System
Brake Levers: Avid
Shifters: Shimano Deore XT 9sp
Front Derailleur: Shimano Deore
Rear Derailleur: Shimano Deore XT
Derailleur Cables: Shimano SIS
Cassette: Shimano Deore XT
Chainset: Shimano Deore LX
Bottom Bracket: Shimano Deore LX
Hub Skewers: Deore XT
Rims: DRC MT19
Hubs: Shimano Deore
Tyres: Ritchey Z-Max
Saddle: Selle Italia Flite Titanium
Seatpost: Unbranded
Seatpost Binder: X-Lite