new underdrive pulley, what belt?

ok, so i have this 02 civic lx, sohc, and i got a lightweight underdrive pulley for it, andit sais needs larger belt. so that i wont have to go through trial and error with 6 different belts, would anybody please tell me what would be the rule of thumb for getting the belt that fits...will it actually fit with the stock belt? or how much bigger of a belt do i most likely need to ry to go with? thanks a lot everyone

wow does anybody know?

Which pulley kit did you buy?

ahh just a lightweight underdrive pulley, thats it, said it required a larger belt

The P/S belt number is 4PK1065, Alt belt 6PK1015 these are for Bando belts. Check those part numbers. This is for a larger belt as seen on the AEM kit. See if this helps at all.

hey thanks a lot man