Will Rod swap require balancing?

I bought new Eagle forged I beams with ARP waveloc 2000 bolts and bushed little ends for full floating pins for $301 shipped off evilbay. You cannot recondition the originals for that, and still have a weaker rod. The eagle I beams are rated for 500hp, and 6,000rpm. I plan on reusing the stock 318 cast crank, and using KB167s. Bec as use of the piston and rod changes, I will be getting it all balanced.