Hi from Australia, dont know about lifting the handle to lock it as the passenger side has an extended piece that slides a bar up and prevents the door latch from opening.The drivers side does not. I will have to try your option but looking at the lock out of the door cannot see how it could work. My 49 was made in Canada and assembled here so maybe it is different? All said if you guys are right it will save me some trouble as you can lock the drivers door, get out passenger side and lock with key and re-enter the same way. Looking for a complete rubber kit, glass, windlacing etc. whole box and dice. I found a site Roberts rubber but saw a forum somewhere that said they don`t fit well. Any help guys? Jack