oiling mods for dummies

Exactly aj-i have to take this in my own hands, ive messed with motors most of my life but have not built on and i just want to understand the oiling path on the small block mopar-the engine originally was built by ray barton and the dumb **** this winter messed with the oiling mods ray had done -we are going to full groove H bearings now but i still need to understand the path of oil and do what mods i can do at this time.