Using the other spare SD kit I had laying around, Musha Optimus Prime became my second SD kitbash. This one proved more challenging than Galvatron due to trying to make him transform, which was eventually accomplished with the help of extra transformation pieces.
Head
Very simple alteration here, I shaped the face down into Op' facemask, which ended up rounded instead of angular, but works good for an SD. I then removed the two small antenna blades from the antenna block, and glued the block to the crest on his forehead. Not having the v-antenna left a small hole in the helmet, but I decided to open it up bigger, so that the gold "OP" would be visible on the inner head piece. (The original kit had a "HA" there, but wasn't even visible, well I kind of liked that design, so I sanded that down, and replaced it with OP)
Body
I removed some of the shallow designs in HA's chest to fit more into Op's design, the skirt armor was cut shorter as well. Three holes had to be opened on the rear skirt to allow for transformation. Sword and scabbord are unaltered, the gun is from SD Musha Sandrock (SD Galvatron).
Arms
The left shoulder was smoothed out to allow for the Autobot logo, and using parts from HA's huge shoulder armor, I made the small shoulder armor parts.
Leg
I added some pieces of styrene to the bottom and rear of the feet to serve as treads. Holes were opened on the inside of each heel for transformation.
Backpack/transformation pieces
Making it so Op could transform into some kind of truck-like vehicle was not easy, but I eventually settled on a design requiring two extra transformation pieces. The front wheel assembly was made from one of HA's gatling cannons, and the rear one was made from parts of HA's backpack. The two connect into one piece in robot mode, creating a backpack. I've decided it can be a big gun too, having three pegs sticking out like barrels and it fits in Op's hand. It also could have a sideway gatling spray, or something, since the wheels are the ends of HA's gatling barrels.
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