318 build problems & new direction

You're very welcome, sir! It's nice to know the general principles of HP savings (or cost savings or whatever), but it is nicer to be able ballpark quantify something like this. The question of "Is it 1 HP or 10 HP?" makes a big difference in how important it is when making decisions.

Of course in this case of lighter rods/pistons, the benefits of less stress in the crank and parts is a separate benefit. NOW someone is going to ask: How much lower IS the stress? The discussion never ends... LOL
Sure, every time you remove weight from the car, it gets faster. ESPECIALLY rotating weight, like torque converter, wheels and tires, and for sure the rotating assembly off the crank.
That is why on my post above, I said there are several changes that can be made to the car that will make it "feel" faster without it showing up on a Dyno. This is why on the "2017 318 race", I have a penalty for using the magnum block (not much of a penalty though).