I think GP has referred to the Barra as BA, so that would be fairly conclusive. So, I don't know how to explain the AY on the compliance plates?
Call it what you want, I'm sticking with Barra for now though, until it is all sorted out and my order form says: BA/AY, XR6T, Phantom Purple, fully optioned, funmobile!
"Daddy, why is Mummy always sitting on that side of the car?"
"Weight distribution, Son."