Prime example of an FRS, probably the best i've seen. There's so many neat little touches everywhere and you can tell from the condition of it that the car's never wanted for anything.
The fact that a hell of a lot of the work has been done by yourself (I/C, air duct etc.) must make it all the more heartbreaking to part with.
Good luck with the sale man, i know if i had £13k I'd be round yours now virtually ripping your arm for this!