Looks like I'm stuck with the GMC/Buick combo; heavier than I would like but very economical compared to custom parts. I haven't bought pistons yet so I don't know the actual rod/piston weight; The stock GMC rod is slightly heavier than the stock 261 but the Buick piston must be lighter than the Chevy so it may end up about the same; still heavy. It's basicaly a street engine so with close attention to details...............
