Yes, the mains are inserts, the rods are poured. Used to be you could buy new rods that accepted the inserts. It would at least be worth a call to a mom & pop parts store to check.
The biggest enemy of poured babbit is high rpm. If you go the babbit route, do not drive down the highway with the engine revving over 2600 rpm. Occaisional bursts over 2600 won't hurt the engine much, just don't make a habit of it.
Am I right in assuming they are going to recondition the rods? If so, they will need to re-pour the bearings.
