i have a 2000 si throttle body and was wondering what size is it stock . and what size does everybody go to. i've heard to different answers on the size so far, 1 being its a 60mm and the other its a 64mm. can someone please put my mind at ease.

 

AEM intake size si=2.75 TB size 60
gsr=2.75 TB size 60
type r=3.00 TB size 62
h22=3.00 TB size 62
Hope this helps.

 

thanks