I have a 1954 chevy 1/2 ton pickup. The 3rd member gasket blew on my rear axle. I need new studs that connect the 3rd member to the axle. The oe gm part #'s are 346402 and 3652348 . I located two dealers with these old studs laying on their shelves. I now how six of the 10 I need. Autozone, checker, napa, and carquest can't match them up. Any ideas?

Regards,
Evan