Nice work. I was just out in the barn last night wondering what to do about that area. What is firecaulking? Is that some thing you need to do to be NHRA leagal?
Someone can correct me if I'm wrong but I am pretty sure with a fuel cell and relocated battery you have to have a rear firewall of some sort so in case of an accident, nothing enters the drivers compartment. There is also some thing with a battery box and without and blah blah blah... I cant remember the whole thing. But yes, in certain cases it is required... I do know that.