Assertion: stock car's engine | /r/HasProperty | introduced in pontiac
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text: The introduction of fuel-injection on V8 engines in the mid-1980s— such as the Ford "5.0" engine (available in the 1986 Ford Mustang) and the General Motors "LB9" engine (introduced in the 1985 Chevrolet Camaro IROC-Z and Pontiac Firebird Trans Am)— benefitted the pony cars with increased power and fuel economy.