The Dayco 94600 belt is for a Volvo S40 and has a rounded tooth form similar to the later Fiats and most other late car manufacturers - this design is better than the "square" early design on the Beta - the belt does not stick in the notches of the pulley as it goes round.
I too have yet to find the mythical 1" belt, and I have contact with a few belt suppliers in my line of work...
Merry Christmas!!!!!