First came City Commander/Shadow Commader, then came Battle Rollar, and now, we have a whole new custom set to check out.

Custom kit brand Best Toys has been working on an upgrade kit for the Classics (1.0) Optimus Prime figure in the form of a trailer and Roller. Since this news is a bit old, here's a summary of what has been unveiled thus far. First, we were given a promo image showing what was to come in the near future. Afterwards, a preview look of the prototype of Roller. Then they showed the first look of the completed trailer prototype. Following that were more images of the trailer prototype, but at a much closer look. Finally, they've revealed that, as a bonus, a gun for Classics Bumblebee will be included in the set.

Also, BBTS has preorder pages for both this set, and a black version for Nemesis Prime. Both these pages have even newer images of the prototype, showing of the inner details of the trailer in its base mode.

For those of you who are unaware, Best Toys is the same group who made the custom heads for G1 Ironhide and Ratchet.