Mid-engine C5 T70

are you planning on doing structural work on the chassis? I believe the C5 corvette gained a significant portion of its rigidity through a large center tunnel tied into bulkheads at the firewall and rear end. The T70 driver compartment tumblehome won't allow you to do that, but it will give lots of space on the outside of the seats you can utilize for structure and crash protection. Also, I assume you'll put the gas tank in the stretch section, as it is well protected there.