Hi, all.
I'm not sure if this is the correct forum for this thread, but I'll give it a go anyway.

My question deals with a flying inflatable boat (specifically a 1999 polaris), and its ability to be legally registered. Somebody with whom I'm acquainted is trying to sell one. This particular craft is a 2-seater, and has NEVER had an N-number.
Some of the research I've done leads me to believe that since this plane wasn't N-numbered prior to January, 2008, It can NEVER be n-numbered. Therefore, it will NEVER be legal to fly. Can anybody confirm/deny this?

Best Regards!