Re: Math
Stock rods, eagle rods and Olivers rods that are made for our cranks are offset from side to side. You can can narrow a SBC rod +/ .010, but the rod will not be center. Some of us had tried this and had rods that were off center enough that they were cutting into the pin bosses. It is best to keep our rods close to piston center if you are running a decent amount of boost.
The eagle rods are the best rods going for our builds. I don't know of anyone breaking or twisting an eagle unless they had an improper tune and detonated the motor to death. The Olivers are just some added insurance, but a bad tune can get them also.
John