well my 04 sid has lockout or "climb it control" as it says on the knob thing. It has rebound adjustement yea but i dont know why i would need U turn. ISnt that just a travel adjustement thing? I have never used a fork with U turn. THe sid only has 80mm of travel anyways. At 100lbs its good too becuase of the adjustability.
mine? well hehe i scored, mine was leaking air on the negative side when i got it so i got it for just 125. (see other posts in search). But it turned out all it was was a valve core so it costs me 5 bucks to fix! 2 for the valve core replacements, a six pack. and 3 for the too. Though if it was functioning perfectly i would never have been able to afford it. It was practicly new too, still had the stickers and barcode on the steering tube. but for under 200 i have seen some older SIDs in good condition go if you can muster up the cash