I hate to be paranoid, but from someone who lost his 350 to flood waters last year, I'm slightly leary of this setup. I had one of the common bumper inlets on my car with a tube running to the airbox. I know that is much more of a straight line than this, but there is a serious vacuum effect in the intake that needs to be considered.
I may be completely off-base, but I'm slightly paranoid if you know what I mean. Just my