Re: need air wiper motors for 82 Crown bus
the other option is to convert to electric wipers. I've been in various vehicles with air, vacuum, and electric wipers and in my experience electric wipers are far superior.
the above posters suggestion about napa auto is a good one....or a big truck parts store. take your old wiper motor with you when ya go.
Quis custodiet ipsos custodes (who will watch the watchmen?)