Quote:
Originally Posted by HuggerSS
This car is RPO Z283; which is factory equipped with headers.
RPO Z284; would be header/cowl plenum equipped from the factory.
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Z28 with ECL
BA= Z28 without either.
Z28with ECL
BB= air plenum only
Z28 with ECL
BC= headers only
Z28 with ECL
BD= headers and cowl plenum(refer to window sticker pictured)
There were 4 Z28 ECL combination as represented above.