Magnum serpentine pulleys with LA timing cover?

Do you already have the parts for V belt or serpentine setup? Changing the timing cover and water pump is an easy thing to do since the engine is stripped to that point. There is nothing wrong with the V belt. They worked for decades on millions of cars. But serpentine is much nicer and simpler.
I’m running the la timing cover because I’m running a mechanical fuel pump for now. Yes I already have a v belt setup but my crank and water pump pulleys don’t line up on this engine like they did on the la 360 I pulled from the car