Also good to know. I've always been open to an RD, but I may need to confirm the physical size before getting too excited.
I've been told I look "fine" on my SL350, but that's a whole different bike. As far as a "street" bike style, the CB450 to me is a like a small one-seater sports car and I wouldn't want to go any smaller. On the CB450, my ass is mostly to the rear of the seat.
Bill, not that it means much compared to your experience, but research online shows that the RD350 vs a CB450 would be a good race, not showing a "clear" winner. That speaks a lot about the power of both bikes, IMO.