Hello Axel, I haven't started the build yet. I recently purchased the molds and they are being shipped to me right now. Once they arrive I'll lay up a body and then start on the frame.
To me the SP Abarth resembles a little Dino. I'm building the car with Hyabusa motorcycle power. It should only weigh 1000lbs when done. I have started a build thread in the build section of Grassroots Motorsports forum.
Take Care, John