In my pile of bits I have one of there 500 back ends and have to say its fits great. Yeah Andy the Yellow stuff.

Its very very light and the finish wasnt bad prior to painting. The only issue the painter had was that he said the fibre was realy dry maybe old stock and needed lashings of resin to fil all the wee little cracks every were. My only issue was the mountings for the rear lights were a little on the flimsey side. The proportions and size were also spot on.
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Farting is funny