This idea has been banging around in my head for a while. A friend of mine made a MASSIVE Cobra BRV out of a Rolling Thunder, and while that was nice and well done, it wasn't the direction I wanted to go with it. At one point, I had a combination General body with a Devastator front, sporting a FLAGG crane, and while that had potential, it just huge, and just screamed "giant target" to me. Another customizer made a sweet Tank transport for Action Force Z force out of some European flatbad that looked cool, so i've been looking for something to mimic that idea.
When I found the Chap Mei Missile Transport at TRU, I had what I needed.
I went back and forth on the color scheme for a while. At first, I figured basic black, but that is so hard to photograph, and it doesn't fit the Techno-Vipers. I considered a 2-tone purple mixed with black striping, to mimic the Technos uniform, but decided to kill that when I realized how bad a giant lavendar flatbed would look. I went with a Tamiya German Grey because it wasn't something I'd seen on a HISS tank, and it wasn't outside the realm of possibility for the Technos.
Combining the Chap Mei Tractor and the HISS was difficult, but not impossible, it was mostly a bit messy due to grinding away large parts of the chassis and then styrening over them. I covered up the seams as best I could, and I'm pretty happy with how it came out.