Id just put it this way ported TBs have caused problems before. I wouldnt even bother unless I could tune for it like matt was saying because of MAF readings lean/rich fuel conditions ect ect. Just do it right the 1st time and get it tuned. Id rather have a car that ran well over a 400plus HP car that ran like ****.
Also I wouldnt trust everything on the ZZP website. Kind of like well you can just slap this or that on and it will work, sure but how well? From a business point of view its more like get this youll need this and this and this in order for it to "work" properly if you understand what Im trying to point out.