I'd do the bearings at the same time....no point reusing 20 yr old bearings on a brandnew bottom end.

Automotive suppliers in Aust still sell bearings for this engine. Places like "Repco" & "Burson" I'm not sure of the equivalent in the US.

The company who makes the bearings is called "Nason"

Big end bearings are around $30AUS, Main bearings are around $60AUS.

I think you should be able to find them in the US too...hopefully