at the risk of going off course...

It is a fixed back CF seat I got on ebay, had to buy two. It weights 14 lb. But you need to get a seat mount. The seat brackets are included. I must tell you, it is for narrow rear ends.
pm me if interested.

 

nothere: Is that a Autopower roll-cage? Do you have a sunroof?

 

I had a roll bar made. Now that I see the autopower, it is nearly the same.... (did you see the pics of the autopower, page 2)
but you are asking about a cage.