Rockauto sells the Dorman, not the FRPP, unless they changed something... Don't get it from them. FRPP from AM is going to be your best bet at $215.
The Eddy intake requires the eddy fuel rails and you'll actually lose some bottom end. The 2V does not spin high enough stock to really take advantage of the Eddy. That intake is good for guys who have built bottom ends spinning 7k+.
The PI intake (OEM/FRPP) is actually a really REALLY good intake as far as performance. Its so good that there isn't even a need to upgrade it on a built application honestly. Lots of guys with 500-600hp supercharged cars and the stock manifold. Biggest issue there is the plastic but according to many sources the plastic should be good up to about 17 psi. YMMV.
2000 Mustang GT Steeda #0048 34k miles. 99 Cobra 4V swapped, FTBR IRS swapped, exhaust, tuned by James Gordon.
Just because I give you advice, doesn't mean I know more than you. Its just means I've done more stupid ****.