Go to kelley blue book .com and look it up.
The 2000 Camaro Z28 had 305 horsepower. The 2000 Camaro SS had 320 horsepower.
Nothing, there is no such thing as an 89 Camaro Z28
200
About 2000
How much are mystery hot wheels worth of a camaro
Try www.nada.com
Try nada.com
about 3000 dollars
Try kbb.com
check out kbb.com
about 2000 if your lucky
Try nada.com