1973/79 Ford Light Truck Parts Catalog / Final printing 10/88:For example see these two links from Bronco Graveyard:
First is 65-76 300s
Next is 77-79 300s
Both appear to have (if the description is correct) the same diameter, spline size, and teeth. LMC truck catalog shows similar, a different part number for 73-76, and 77-79. Which makes me wonder... how are they different?
For quality parts, your local NAPA store will have them. I wouldn't get diddly-doo from LMC, even a free catalog, cuz it's no better than their crappy Chinese parts.
How much does LMC sell that is their own product? Next to none.Not everything LMC sells is their own product or label rated product
Most of these aftermarket places buy from the same manufacturer.
Dennis Carpenter and Blue Oval Trucks parts IMO awe the best all round companies.