Hi Paul,
I was going to do the same thing. I bought a SM F16 and was going to purchased the JL F16 L/G, but I found out that they don't fit. I would have to remove the landing gear plate and cut off some bulkhead area to make them fit. If you don't mind doing all these works, eventually they will fit, but it's too much work for me so I gave it up. My SM F16 is still sitting in my garage waiting for new legs.
Mike