New eagle rods or refurbish originals?

If you run a set of eagle or scat rods they will certainly be lighter than the factory rods so you will have to tale weight off of the crank not add to it i would say a capable shop could do it pretty cheap a good balance job is a must in any new build in my opinion. I personally have scat I beams in my 408 no issues at all and I'm building another 360 with a set of eagles I picked up at a swap meet they look to be outstanding quality