I am in the process of re-spraying my 1983 Esprit and along the way will be adding some enhancements. Pictured is a sewn "diamond tucked" pattern under- bonnet treatment to cover this large un-finished area.
If any owner out there would like the same piece I will be happy to have my upholsterer make up some copies. Installation will be with spray on contact adhesive you can purchase at any hardware or auto parts store.
If interested you can email me directly at email@example.com. I think the cost was about $60.00 but will confirm before you order.
I just checked the link (emailed myself) and it worked. It doesn't weigh much, maybe one pound. I am not sure if it will fit other models but you can do what I did which was to make a pattern out of poster board. Roll it up and mail it to me. If there is a certain color you want I would suggest you send a sample to match.