If you must have it in there then it very possible....with one catch: If you're mechanically inclined and have some basic fabricating skills you can make about any engine fit in any vehicle. If you aren't, then it's going to be difficult if not impossible.
I've done many crazy things with RC cars over the years. With 6061 aluminum stock, a good metal cutting saw, a tap and die set, and dremmel, I've been able to do everything I can imagine.
Just curious as to why you want to put this engine in your Jato? The car will be much slower with this engine. I bet it would sound pretty badass. It doesn't put out a ton of HP, but I wonder what the torque curve looks like...probably pretty nice compared to the 3.3, so gear it to the moon and see what happens