Here’s an idea of how some of the V8 Miata guys have done it. Instead of coming straight off the firewall, mine is going to bend down and away from the motor before looping back. Here’s hoping there is enough flex in the 1″ OD, 0.5″ ID #10 barrier AC hose to do that. I really would have preferred a 45° fitting at the firewall but none was available.
