Can you replace rod bearings with engine still in car?

Well I think I'm going to try this and if it doesn't work I really aint losing anything. I heard the engine run the other night and if the guy didn't tell me I wouldn't have even noticed that the bearings were bad. Theres no way it's spun because I know what that sounds like. And when I'm down there should probably replace the oil pump too huh?

I'm more familiar with chevy motors because they are what I've rebuilt in the past. And have put high volume pumps in them. But is it a good idea to put a high vol. pump in a 360? I've also always used fel-pro gaskets in my chevy's but is there anything better that you guys recommend?