Does anyone know of a good place to get seals and bearings for a 1956 Ford F-100, 3 speed manual transmission?  I found the gears I needed on ebay, but am having trouble with some of the seals, bearings, etc.  

Thanks in advance. 

Try Van Pelt Sales. He specializes in obsolete transmission parts. Great guy. A Google will get you there...

Great!  Thank you. 

All seals and bearings have a number on them, any bearing supplier can get you the proper replacement. (bearing and seals are the same of years and years)

Thanks for that.  I didn't know that.