The L32 injectors will work fine if you want to wire in the proper injector wiring connectors for them. If you don't want to wire in the different connectors, you can use L67 injectors. The L67 injectors will work fine in the L32 returnless fuel rail.
For fuel pump, if you are keeping the engine stock or just doing a few light mods (nothing that pushes the engine power over 300hp), then you can use the Delco EP-381 fuel pump.
If you use the returnless L32 fuel rail, you must mount an external fuel pressure regulator somewhere and I recommend you use a vacuum+boost referenced regulator. I usually just cut the stock regulator off an L67 fuel rail and mount it down by the fuel filter and connect it to the system as seen here: