[HawgRyder]

Just to add my $.02
You can run a single compression ring and one oil ring on a piston.
I have done it several times with good results.
BUT...you need to use a Total Seal type ring for the top...and a good quality oil ring.
AND...I used Teflon buttons on the skirts of the pistons to keep it straight in the bore (to prevent piston rock).
In this way the buttons reduce the friction way down (benefit of no skirt scuffing)...and the oiling requirements are less too.
Bob