Car appreciation... the aesthetics, the engineering, etc

I'll give you £500

It's not standard, but you hide that at the bottom. I would put a bullet point list right at the top with the headline stuff, because otherwise it just looks like a bloody expensive old car. You should be able to see why it's worth the money before you read any further.

Don't use language that makes you sound like a dealer. It's particularly too flowery in the Exterior section - it sounds a bit Swiss Tony. Just stick to the facts. Colour, the condition, list any faults.
Same to a lesser extent with the Interior section. Nobody cares that Porsche helped design the seats; just whether they are clean and untorn.

Finally, there are a couple of pics on the Flickr that look like during or before the paintwork. E.G. https://www.flickr.com/photos/8131181@N05/29956403956/in/album-72157685948864802/
Unless it really does look like that, I'd remove it as it makes the car look like it needs paint.
Should there be a bonnet liner? I see the originals are NLA, but I wonder if either a custom dynamat install or a quick spray with an aerosol over that primer would help?

Will accept as trade for rocket ship paint..... 😂😉😳

Do you think the high mileage is putting people off before they read all of the work thats been completed?

Wander whether its worth pointing out early in the description that whilst its got a high mileage its had basically every part replaced?