That is probably true and in fact I would say ‘67-‘73 is a safe bet. Might be some different mounting brackets but as long as you have your original you can change out brackets.
I am 109% sure that there was never a console shifted ‘67 Imperial from the factory. That being said it looks like a decent job was done on the conversion. The non-existent console shifted Imperial steering column looks good but they could’ve covered the PRND21 on the dash above the column.