[Z06] please educate me - differences between 2002, 03, 04 models





1. what are the differences between those model years (other than the '04 rear shocks)
2. did they use the same cam for all 3 years?
3. any other differences in the motor - i.e teflon coating on the pistons, piston rings, etc?
4. were there any changes to the clutch, tranny, differential, halfshafts made during those 3 years?
5. any desirable options added after 2002?
6. finally - did GM recently do a recall to disable ALL column locks?
thanks




