Pulley question

I do have an LA 318 that came with the car when i bought it. That still has the crank pulley would i be able to use that and gather the rest from the JY. or would it be best to just get them all from the same vehicle
If you have all the pulleys, brackets, accessories, and timing cover from your 318, I would do that. Just need two piece balancer from 5.9 Magnum. Good luck!