I've got a 03 ZX3 2.3 standard. bot it with 9k, now has 137k. Best and most fun car I ever had (I've had many-66 GTO, couple triumphs, 4 Z cars, Dodge charger shelby turbo, Eaglt Talon awd turbo (many turbos)
I've replaced the radio, front brake pads (rotors really should be replaced) Sway bar links 4 times (thanks AZ), and now the pass side motor mount needs replacement
I get 30 mpg summer, down to 28 winter, Just replaced the original battery, after 9 winters in Mass.
Be tough to find an earlier one with decent mileage, though