Complex sentence: It had a chrome oil filler tube in the front of the intake manifold next to the thermostat housing from 1967 to 1968, and the first year unique chrome valve covers that had Chevrolet stamped into them without an engine displacement decal pad.
Split into simpler sentences: It had a chrome oil filler tube in the front of the intake manifold next to the thermostat housing from 1967 to 1968. The first year had unique chrome valve covers that had Chevrolet stamped into them without an engine displacement decal pad.