This was one of the first mod car I downloaded when I got Assetto Corsa but I downloaded so many all in one go I completely forgot about this car until this most recent update for 1.9
I have to say I am impressed with the handling and the interior is really nice as well. The sound is great and it has quite a punchy engine. I took it out for a spin around Aspertsham Street Circuit and it was nimble enough to handle the narrow country roads.
If you are interested in viewing the lap you can find it here:
https://youtu.be/_DOJPdXcgJc
About the background on this car, well, it started as a 914 kit (http://www.eaglegt.com/index.php) but then the owner decided to make it a fully custom made sports car using a custom fiberglass body and parts available in the market today.
There's a little bit more on the info page in AC.