Johnny, what is behind the bulkhead next to the turbo? I'm thinking maybe the air filter can be behind the engine in the back of the car. Of course I've never seen one in person, so I might just be shooting blanks here.
Another option could be a doughnut adapter. You've probably seen this type of thing, but I'm describing it all weird. It lets you be able to make a 90* turn without having to worry about a tight radius hose. The losses are minimal (although it looks like it would be a giant bottleneck) and it looks like it might solve your issue.
Something like these, but on the turbo, not the intake.