The .028 is the 2.3L fuel injected M102 motor.

In 1988, 13,143 were officially sold in the US for base price of $29,960.
KE III fuel injection; 130 bhp @ 5,100 rpm; 148 lb-ft @3500 rpm; 9.0:1 compression

5sp manual ratios: 3.91, 2.17, 1.37, 1.0, 0.78 Final: 3.23