What I'm going to build will rarely see 4k so I'm comfortable building it without balancing. I will reuse the 360 rods because they are heavier. I'm building a truck engine, I want more torque and mileage. Compression will get me both as long as I drive like a old man. I will occasionally pull a trailer. I won't ever see more than 4-6k behind my truck. Trans is getting a rebuild with some upgrades as well. My city mileage sucks, but the highway is great with cruise on 55.