I fitted mk2 "wind up" doors to a mk1. I slotted the latch on the door post so they shut properly. The buffer needed to be mounted on the pillar, it will need a new hole drilled for the different hole spacing on the buffer.
This was only done to put together a very scrappy project to sell, for someone to make a tube frame racecar, or whatever, but the doors worked perfectly like this.
It's generally a better idea to use the correct doors for the car, but mk1 doors are getting rare and expensive.
*EDIT* I think you mean for a K? I didn't see your typo. I have no idea about the burst proof door latches.
