JB,...matched sets are still available, most parts store dummies have no clue what a matched set means,....when a belt is made, it starts life as a long tube that gets turned (cut) in to the desired V rating (width and profile) numbers are stenciled along the belt in a progressive series along the width, ...example 33345 and 33346 are matched, 33345 and 34478 are not, it was cut further down the tube, which may be smaller or wider in diameter,....the BS line that all belt are now built to exacting standards is BS,....find a parts store that can supply your request