Just put the 4:10 differential in the 1 ton and need to replace the pinion seal and u-joints. Does anyone have part numbers for these?
Thanks......

1955 1rst series Panel GMC 1 Ton


1955 GMC 250 Panel Truck
Making music in the hills of East Tennessee
http://i1073.photobucket.com/albums/w399/SoundBiscuitProductions/GMCTrailer_zpsaomwdejy.jpg