We stock parts for the old Ford truck 4 speed trannies. The rear oil seal sells for $7.00. The complete trans gasket set sells for $19.50 (it does not include the seal, just paper gaskets). We also have the clutch shafts, shaft bushings, TO bearings, gears, etc. Here is the link to our trans parts prices on the 4 speed:
http://www.vanpeltsales.com/FH_web/t...ruck4speed.htm