anyone balanced a stock 360 crank?

I am building a 1999 360 Magnum. I have a MP 4.0" cast stroker crank, Eagle SIR rods, Probe forged pistons, 727 Transmission.

1. What balancer should I use. I have the one that came off the engine but it has a big *** pulley welded to the front of it. Would like to run a march pulley system.

2. Do I use a B&M Flexplate part # 10242 or do I use the Mopar Weight Package part #P5249842.

This whole balancing thing confuses the crap out of me. Please someone tell me what I need so its balanced.