NO!! You cannot put over sized rings on your standard pistons....
If you have rust, I am sure you probably will need a bore. It is important to measure the bore, check for out of round, and taper. You then measure your pistons, and compare so now you know piston to cyl wall clearance. "IF" you are in spec, and your bore is straight and true, you then can perform a "light" hone to remove the glaze.
I can supply new pistons, rings, gaskets, measure and bore your cyls up to the next size (As long as they are not on the last bore, cracked, etc) if you want.
John
watcon@watcon.com