Yes, you could do so but you would only want 1 side run into the breather, the other side will act as a vent. However keep in mind this will cause the air filter to ruin alot faster than normal, and they`ll be a mess in the air cleaner.
I don`t understand exactly why you can`t run a PCV as this has the benefit of keeping the oil cleaner so it lasts longer. If you simply don`t have a vacuum port due to the 1 large port on the holley carb you can do it 2 ways. You can get a screw in vacuum port that screws in the intake runner right behind the carb to run the vacuum from the brake booster or you can T the line and have it run both the brake booster and PCV. This last method is what I did once. You can also order 4 hole carb spacers with a built in rear vacuum port. And last but not least, you could always stick a Quadrajet on it.