I've fitted series front doors to my 90. Passenger side is a S11 bottom half with S11 handle and no key lock. Thimble lock inside. Drivers door bottom is S111 with key lock. The striker plates on the body had to be changed, but easy to do. The door tops are Rocky Mountain with the double sliding windows. Similair to military 90's but the glass is not sloped. For me there is no down side. With the front window open, you get good ventilation, air inside gets sucked out, so no draughts. Also it cost a fraction of the cost of replacing two knackered 90 doors, locks and window winding mechanism. :D BTW, the check straps are SJ410.