The problem you have there is if you order one from H.F. its more than likely not going to be new but reconditioned. Therefore you might get the 2 ring & you might not! Wally World is selling the low end Yard Man that has the new 2 ring Ryobi in it for around $69 but the crank case has changed for the Ryobi to include a large cast mounting flange simular to the 25 & 30cc Homeys where as the old Ryobi mtg flg just unbolted. I just finished up one of these & with a little cutting & grinding you can get the case down to praticaly the same size as the old cases. I havent ran the engine so I cant give a report on performance yet!