hey i was just wondering what mm throttle body to get..the throttle body will be a skunk 2..its for my 00 gsr..also what is the difference in the different mm of throttle bodies (66,68 ect.) .

One more Question ive heard that in california the skunk 2 intake manifold will make you fail you emissions test ..what about it missouri?

thank you

 

The best thing to do is getting your TB port-matched to your intake manifold.