[big gear head]

The new Eaton Posi has several changes. The original Eaton Posi had 18-10 gears, 18 disc steel clutches and 200 pound preload springs. The new Eaton Posi has 17-10 gears, 14 disc carbon fiber clutches and 400 pound preload springs. I think the new gears are powdered metal. The earlier Moroso bruit strength was a heavy duty Eaton Posi with forged 17-10 gears, 22 disc steel clutches and 800 pound preload springs. The case is still the same and all of the parts interchange. The COPO is apparently a little different from all of these.