Welcome Thrust. I'm not sure what the diameter of the stock TB is, but it is pretty small.
You can get a Focus Central 65mm throttle body to work with a little effort. BTW, you really don't need the throttle body until you do some serious mods. Just get your current throttle body optimized.
Also, please read through all of the stickies on the top of this forum and be sure to SEARCH. Many of the topics in this forum have been beaten to death.
Originally posted by Augi:
I wish I had VCT...
WHY?!? It's just emissions garbage. It's not there for performance.
HTH,
BP