273 commando rebuild question

toolmanmike said
If the pistons/rods are lighter the machinist will drill the crank to balance the weight. The 273 rods are plenty strong and I would use those. The machinist will weigh all the pistons and use the lightest one and make them all weigh the same by removing material inside the piston. They do the same with the rods. They make them all weigh what the lightest one is. tmm

On the 273 rods I think my main concern is the 45 year old bolts. Of course if I have new bolts installed I think they need to be resized. Then next thing I know I have more money in them than a new set cost at Jegs. The 340 rods I have a lot of money in from 20 years ago but they have very little run time on them.