Anyone ever seen or heard of these? https://www.subito.it/moto-e-scooter/honda-400-four-bimota-napoli-281025928.htm
Think you might be right, Liam. Just did a search and came up with this: Honda HB1 CB 750 Four / CB400F 10 / 12 (est) 1975–1976 HB2 CB 900 Bol d'Or 193 1982–1983 HB3 CB 1100 101 1983–1985 HB4 CBR 600 RR Fireblade 2010 Ad says the bike is 1970 and built from a kit. In tat case way overpriced!! It's okay. Not in UK. That saves me!!
I see a lot of Hongda bikes in deepest darkest. Look like crap http://www.taipeitimes.com/News/biz/archives/2004/12/25/2003216700
The tailpiece does seem to emulate a flat tracker to me. Was doubtful if that would be from a manufacturer but I may be wrong. Z900 might be one to look at as investment (if you even have an itch to go to the dark side)