Looking for belt size for mower 3160 deck

[Dan Stuckey]

Recently bought a 154 with a IH 3160 deck. Has one longer belt from pto pulley to thr center spindle, and 2 shorter belts from the center spindle to each outer spindle. The longer belt sort of bit the dust today and I'd like to get one quickly. Is this a belt I could get from NAPA? If so, does anyone have a size length and width to this belt so i can give dimensions to NAPA to get one? Thanks guys

[indy61]

The parts lookup shows IH-542177-R2 for the long belt. Over $100 at Case/IH or Cub Cadet.
It's equivalent to a B124 in size (available at NAPA) but it needs to be an extreme duty belt to withstand the twists and turns of the mule drive.