Sanyo 4912 works fine with pin locks and it's conversion is well-documented. It is sometimes harder to find (I found mine at Fry's.com) and it is a little pricey but I only took the shelves out and modified the top for a tower. No door modification is necessary (well, I took the bin off of the bottom of the door. It is easy to remove and put back if you change your mind.).
I'm sure there are many others that work as well.