RE: Ring Replacement Question...
Steve,
Frank Bowman is typically less expensive than the OEM, for the same engine.
While his rings are also suitable for competition; his prices are in general, less than stock.
The rings are better than stock too.
I have not had the pleasure of buying a ring from him yet (since most of the engines I use today don't have rings), but I have seen them in other hands.
Good stuff!