2002 Explorer Application?

Hello all,
I'm new at the whole SC thing. I've been looking for one for my 2002 Ford Explorer 4.6.
I've done some research on the Allen (the only people who makes one for my app) but I am very interested in the ATI's. Is it hard to get custom plumbing done?
I know that ATI has a kit for the 4.6 F150. I'm sure it's the same engine, just different locations on the accesseries. There's not as much room in the Explorers as in the F150's. Is it possible to get an ATI to fit my application?

Or should I just opt for the roots style Allen?

any comments and info is appreciated, thanks

Sarek