Wow, we don't get the opportunity often to have a specimen as rare as this come available everyday. Have a peek at this recent listing on ebay:
https://www.ebay.com/itm/Porsche-911-prototype/173725421567?hash=item2872d78fff:g:tCUAAOSwmFxcGXR 6:rk:19
f:0&vxp=mtr