Will seats from a 1969 Chevy Impala fit into a 67 Impala?
In short, yes. Any seat from any vehicle will fit. The question is are you capable/willing to make it. Search online for a 1967 seat bracket and also a 1969 seat bracket and compare. If they match, the seats will drop in without fabrication.
There were styling changes in 68 and 69 but I think that was largely sheet metal. The seats will probably bolt in but check before buying.
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