Will,
Re-pouring the babbitt is a technical procedure that is (was) usually done by a rebuilder. I think it is beyond the home shop mechanic, and you won't find any automotive machine shop doing it either...it's a specialty.
Reconditioned rods are available from some of the suppliers that cater to our old engines. You send them your cores and some $$$$, they send you some nice new rods.
If the rods are worn out, the crank journals are probably worn too. This might mean a regrind!
This is my take on the situation!
Stuart
