golf gti has same TB and manifold
what do you mean "what TB and manifold is good"?
as they are the same

a good thing is to have "throttle bodies" put on
(if you search for "f2 stu" or "dinky dave" they both have them done)
 
You can machine a slight taper off the throttle body for the ABF to enlarge it... look on the earlier pages of my project thread and there's pics!
 
Between VW's 16v engine ...

ABF said that the best intake manifold and TB?

Provide a better flow of one or more large one that is not?