I take it you mean eight-wheeled 
But yes, the chap building it showed that it’s about as big as a Boxer — slightly longer, but also slightly lower, by the looks of it. The Piranha, OTOH, looks top-heavy with what’s not even a very big turret.
That would be a cool thing to do, yes 
I had fun at a show earlier this year with my “M70A2” in Gulf War colours, especially when someone I was talking to about it went and fetched his friends, who were self-professed “Abrams nuts” and just couldn’t place what they were looking at