Yes.Yes.
The 2.2 engine has one. The 4.3 engine has two, a small one and a bigger one.
Cars did not get catalytic converters until 74. Trucks were 81, or 82.
Yes, 1977 light trucks are factory equipped with catalytic converters.
Catalytic converters are located in the exhaust system between the engine and the muffler.
YES it did.
Not legally
YES...
It has one
By law, yes.
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