More 340 / 360 crossbreeding.
Now that this has been created, knowing where improvements could exist, the balance pad on the big end of the con rod has ample meat on it. That is where, say about, 10 grams could of been removed, which would factor into being 20 grams for a "bob weight" calculation, about. This then could of been practically an as-is drop-in conversion. Then could have been factory identical weight. Note factory was only 9 grams out front to rear from the get go, not bad. Here it is after filling in 1 front and 1 rear stock hole, now weight needs removed, 7g front 14g rear, but note the clocking position of where, totally doable.