A few parts overlap from 28 to 32 or 33's. The clutch shoes 150043 and 150044. Lots of springs overlap. 32 and 33 parts are normaly in 180000's. 28's seem to be in the 150000's. Anyhow, if you look in a 32 or 33 parts book, you will see lots of numbers of springs and wicks, etc that are very low, below either series I listed above. Wayne