It sounds like the seller created this himself. He did a nice job.
The seller says the car "was stripped down to the shell and almost entirely re-built." All the modifications are sheet metal. After cutting the roof, the frame was strengthened using two rectangular 1.5" x 3" rails x .125" wall thickness and a roll bar." This is obviously not a quick chop job.
What impresses me the most is the top. Many, many convertible conversions - even those done by professionals - have awkward looking, odd fitting tops. This one is tight, looks as good as a convertible top can look on a Civic, and seems to fold nicely behind the rear seat.
If I were to buy it, I'd remove the dopey looking "key" on the trunk along with the orange wiper blades, door handles, mirrors, etc. I'd also fit different wheels and re-chrome the bits that were once chromed (i.e. the Civic badge on the trunk).
I'll sum up this post with the a paragraph the seller wrote in his ad... "Please understand that this car is for someone looking for a unique vehicle and not a daily driver, in fact you need to be a bit little loony to want something like it in the first place. So if you are looking for a car to take to shows, races etc or you are an extrovert, and just want to knock everybody's socks off, this will be the best money you will ever spend."
Located in Huntington Beach, CA, click here to see the eBay listing.