KZ440 fork bushing size

anybody know what size bushing to use in rebuilding an '82 KZ440D front fork? I took the forks into the shop to have oil seals replaced and was told that the bushings should be replaced as well. They're not listed as a separate part on the Kaw website. Anyone familiar with this? My knowledge of forks is rudimentary, that's why they're in the shop. Thanks.