What size belt for TC?

[Riderforlife]

Hey everyone, Im not sure how to measure a TC to determine which belt to choose, so hopefully you guys can help me out!

This is the TC i bought,....
Torque Converter Kit CVT 3 4" for 40 41 or 35 Gear No Returns See Listing | eBay

and I want to buy a good belt from one of these. Which ones will fit the TC, and which one should I buy?

Comet & Max-Torque Torque Converter Replacement Belts

thanks a lot!!

 

[gumpit]

I believe they are 203589. but it will come with a belt. Double check the numbers on it when you get it.