What year are your hulls? The castings are not universally interchangeable, since the pins are different on newer boats (made for EZ-Loc rudders, since 2006), verses the obsolete style (like for H17s, etc...).
You can tell the year by the end of the serial numbers.
The old style rudders fit just fine on the EZ-Lock style pins.
You can't put EZs on the older boats without changing the pins.
