The real challenge would be building the same plane in 1/72! I know there's a 1/72 scale kit available, but I forget who makes it.
I've been fascinated by the Goblin since I first read about it when I was in high school (late '80s). I've seen some footage of their unsucessful, and sucessful, attempts to hook up to a trapeze hung from a B-29. It's pretty cool, but I can see why the concept didn't go too far.
Regards,