Intake Combo

I'm trying to figure out what size throttle body to go with. I've got a bunch of parts waiting to install and im gonna do them all in one weekend. when its all said and done, i'll have a full slp loudmouth exhaust (ceramic coated longtubes, catted x, and LM1 cat-back), ford racing 4.10 gears, and an Accufab 70mm intake plenum. i'll eventually throw on an aftermarket cai kit, but for now im just going to remove the air silencer and throw in a K&N. should I go with the 70mm or 75mm throttle body? the cars an 02gt, stock right down to the floor mats, and its going to remain n/a. i appreciate the feedback

ive been doing some research on it. according to accufabs website, on a stock 2V the 70mm makes slightly more power than the 75mm with the stock plenum. but, with the accufab plenum they make the same power across the board. here's the link. its pretty helpful
http://www.accufabracing.com/mustang_gt.htm