Chern Chuang made a fused C60 dimer a few years ago. I scaned the model by the scanner as follows,
The neck in this structure is basically the same as the inner part of T120. The two C60s in this model is staggered, so it has D5d symmetry just like that of ferrocene.
I made another one with two different colors last weekend. I managed to use a single color for both pentagons and heptagons. Comparing these two photos, it looks to me that the structure of this model looks a little bit longer than the one made by Chern. I don't have the original model made by Chern with me now. But I believe this is caused by these two different ways I took the photos.