need to know up pipe to throotle body hose size?

[the wrath]

I have a 87 gn with a stock throttle body and up pipe i thought the hose was 3inches but i was wrong thats too big. i need to know the inner diameter of the hose.

 

[novaderrik]

if you have a tape measure, it sould be easy to figure it out..

 

[the wrath]

thats the problem the car is not near me right now.

 

[TR Custom Parts]

Stock up pipe is 2.5"