Odd shaped radiator solution needed

DK27

I have a one pipe steam system that has the following issue. Before we moved in a remodel was done and a small 18 edr burnham convector was used to accommodate a tight space, width being the issue. It did ok with the space in previous years, always a few degrees colder than the rest of the house, but with the cold being so brutal this year it's just not doing the trick. Given the space it would really need something closer to 35 EDR, and the boiler does have the excess capacity. the height can pretty much be anything and the depth can be up to 15" but the width can't be greater than 14". I've been trying to track down something that works and having a tough time, even looked at those european vertical models but I don't think they are made for 1 pipe steam. Any thoughts or suggestions?