It is actually a 73 model. The VIN, lit pull knob hazard switch, intermittent wipers indicate that pretty clearly. Would need to see the build date on the drivers door tag to confirm. There have been lots of legitimate year "adjustments", just check that ALL VIN's match. Dash, door tag, what's stamped in the firewall above the brake booster, and if there, on the engine bay tag.
Would need to see receipts to see how they spent $12K on the engine, and to see who did the work.
The asking $$ is not crazy, but likely somewhat high. Depends heavily on the actual underlying rust condition and quality of the current body work and paint, and overall quality of what has been done.
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