I ( rightly or wrongly ) have just bought a mid eighties Honda GB ( yes, GB not CB ) 400 TT Special Edition. Story goes Honda produced this bike to commemorate the numerous wins at the Isle of man TT races. Can anyone point me in the right direction for original spares such as indicators, exhaust system and instrument housings. A workshop manual with a wiring diagram would be extremely useful. Also, does anyone know if this bike was based on a standard Honda model of the era. The engine is a 400cc twin. Thank you one and all for any information forthcoming.