Not all pistons have a ring groove in them. As for the room to do so? Again I'm not 100% sure. My
307s did have the ring groove all ready in them.
My rods were machined to let the Pin float The were also Drilled so that Oil could lube the pin.
Personaly this extra work/money may not?? be worth it for a daily driver. And Maybe not enough
gain in a daily driver. That would ever see Or feel. If it is The first motor you ever built,
Or if it is a different Rebuild(combo built meaning Not the same build with The Pins being the only change in the Build)
God doesn't like ugly.
