Hi, I know for sure that the g box is an FTR and that the guy is manufacturing nearly everything else himself. He is no stranger to building cars, this is his previous creation using a Honda Blackbird engine and a Dallara carbon tub.
Have you got any pics of how the engine is attached to the chassis? I guessing the engine a is a stressed member, but there looks to be nothing tying the gearbox back to the bulkhead apart from the engine.