valve seal/guide confused
The intake guide in the pic that the OP posted appears to have a bronze liner installed.
I have done similar operations where someone had previously installed .502” iron guides in the exhaust, and nothing in the intakes.
Installing the bronze liners is less traumatic to the head, so the intakes get those ........ and the 502” iron guides get replaced with .502” bronze pieces.
The intake guide in the pic that the OP posted appears to have a bronze liner installed.
I have done similar operations where someone had previously installed .502” iron guides in the exhaust, and nothing in the intakes.
Installing the bronze liners is less traumatic to the head, so the intakes get those ........ and the 502” iron guides get replaced with .502” bronze pieces.