Greetings from California!

Nice looking '67. You should keep the post, it wouldn't look right without it. The hardtop has a completely different rear window slope and roof/window line--are you aiming for the hardtop look? Keep in mind, the 2-door post has the same rear window and roof/window line as a 4 door. I've never seen one without a post, but I'm sure it's been done many times.