I just look at a nicely restorded H code 68 Dart GTS 383 4-speed for a friend.
When checking for the VIN of the back of the block near the oil sending unit. I noticed that the numbers looked a owner stamping and not factory.
Then I realized that who ever did the stamping used the SO number from the fender tag and not the VIN from the dash.
After we put the car up on a lift, I found that the transmission pad on the passenger side that the six sequence numbers from the VIN stamped up side down on the pad.
In 1968 did the factory stamp the VIN on the pad of the 4 speed cars?