Heres the story...my best freind is buying a used bike since his 2-smoke died (for the last time). Hes got a $4k budget and two bikes in his sights. Which one would you pick...heres the breakdown, wants 4 stroke, Bike 1) 2003 YZ 450, heavier flywheel (either whole thing or added weights), TAG bars, lots of carbon fiber skid plates and disc guards. Red sticker (I think '03 is red). Bike 2) This gets sticky... 2000 KTM 400 SX(?) 4 speed...that had a 450 kit put on it, broke some cam part, locked up the motor BUT, rebuilt top-end by KTM dealer with new 450 kit on it, and a 6 speed box. Scott's stab, TAG bars, some plates and guards. I'm partial to the YZ, he likes the green sticker KTM but I hesitate on the KTM becuase of other possible engine damage due to the 'lock-up' and timing chain breakage incident...no matter if the top end was rebuilt (i.e. What about the bottom end? Cracked crank? Cracked case?).