Well, I do have a Shimano Ultegra BB with the proper Italian threading for the Pinarello laying around, so I'm set either way. I'm just wondering if I really need to change out the BB as well.

What's surprising is the 880 g claimed weight of the MOst C7 vs 650 g for the Shimano, both including BB. So this is more than a whimsy, which means it'd probably make the most sense to change out both the BB and crank-set

Thanks for all your input