273 Connecting rods with TRW L2222N Pistons

Those rods are for 273's or early 318 rods. They are for full floating pins, they have a bronze bushing in the small end.
Late 318's [1971 and up] and 360's use the wider, stronger, heavier rods. They are for press fit pins.
All 340's use the heavier rods with bronze bushings.