At introduction, three 305ci engines were available. The RPO LG4 was rated at 155hp and included with the Z28, or optional with Berlinetta or Sport Coupe. The RPO L69, rated at 190hp, could only be ordered with the IROC package and only with a manual transmission. It was discontinued during the model year. RPO LB9, rated at 215, had tuned-port fuel injection and was optional with both standard Z28s and IROC Zs. But RPO LB9 could be ordered only with automatic transmission.
reguardless it was slow
also keep in mind they weighted 3200-3800lbs pending options. I would think your mazda weights 2400-2800lbs.
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2005 Joe Gibbs Silverado # 0396
1988 Monte Carlo SS 5.3/T56 and too many mods.
2003 Honda 954RR