I design all my designs from scratch so I can make you something from scratch depending on what exactly you want.
Technically, I think you'd still want to have port opposite side of where you are metering, but that's only if the layout works properly. I will say most suv boxes have the port in the middle that I've done, and they have proven results. I don't think it's quite as big of a deal in SUV's if your box is huge for like 2 15's or an 18. Now if you had like 2 8's, I think the port position would affect the score more. Then again, a guy that was AQ's website years ago had (2) 6" aeros in each corner and ran a single hdc3 18 and was like 1st in his class in a trailblazer iirc.