340 Bearings
H bearings are race bearings and are used on a crankshaft with a radiused crank journal. Yours will take a P series Cleveite bearing.
Take a look at the King bearing line... the SI line is the standard bearing.
Often you can find older Federal-Mogul bearings on Fleabay for a good price. They work fine, too.
You really don't need a coated bearing or any fancy-schmansky parts.
DODGE 5.9L/360 Mopar small block LA King Engine Bearings Rod Bearings