drive belt size/model?
 

i am having a bit of a dilema

as some of you know i just rebuilt my motor and reinstalled it.

now my old belt is to short as i went from a power pulley to standard sized bugpack alu.

i picked up a belt that should have fit and one that was one sized smaller just in case.. but the larger of the 2 is to big and the one that is one size down is too small.

can anyone give me a model # for a belt that will fit a 1600dp AH case with alternator and stock sized pulleies.

thanks

jeff