http://www.timken.com/EN-US/product..._Seal_Application_Catalog_1989_older.pdf Start around page 110 for all Chevy truck stuff. Some of your transmission parts will be on page 118. If you end up needing gears or housing parts, I think you'll be limited to buying good used parts. I rebuilt the transfer case on a 1963 K10 (I should've never sold)and ended up buying a donor Xfer case for gears etc. All other parts were either listed or I found a part number on them. Watts, OK is kinda in the sticks according to Mapquest but you can probably find a good bearing supplier in Tulsa. A good micrometer will help you locate all the parts you may need.