1974 Dart doors on a 1968 convertible?

My 67 Dart Convertible has what I believe to be a 70-up passenger door as it doesn't have the extra latch thingee that the convertibles have and it doesn't have the dimples where it should go. I think the door lock is more towards the middle of the door on the 70 and up(mine was filled and moved to the back)and what I have gathered from previous threads is that the windows are different between a hardtop and convertible. Hope that helps.

Hey,

"latch thingee?" is this near the striker plate or something? Or is it on the hinge side of the door? Could you describe it more?

Thanks for the info.