The belt part number is A/C #K080525 with a turnbuckle body length of 5.5 inches. I also shortened the Alt belt but I don’t have a mechanical fuel pump. Alt belt #K080435 and a turnbuckle body of 3.5 inches.
FYI...The AC turnbuckle in my setup is in a different location than the way their instructions show as it won’t work their way by lowering the compressor.