mnm99,
I put one in my Zephyr, pictures here:
First Coast Cobra Club • View topic - Zephyr gets EFI'd - part 2
It sticks up around an inch I think (too late to measure!) and seems much quieter than the external pump it replaced.
My tank isn't baffled either - this is my reason for using the Phantom. You can see the specs on Aeromotive's site to determine if it has enough capacity. It's plenty for my mild 557.
Tom