Just got British Customs seat off ebay for a very reasonable price. Quite a heavy thing and raises the seat height for a short arse like me from feet flat to still able to touch the ground. Not worried, quite like it as I have ultra low LSL superbike bars and I guess and inch on the seat is like an inch off the bars, and I prefer low bars. Still manageable, but BC quote no difference in seat height. Seems really well made, comfortable, and love the looks. I think it is supposed to be fitted with a tail tidy, but the Bonnie is a surprisingly practical bike, and much as I like the look of the stripped back mudguards I think I want to keep that practicality. Plus, once you fit the tail tidy you have to fit a shortened front mudguard and the never ending changes continue. Maybe that's the fun....