I think having them separate and bolted together is still the best
alternative.
George( down under)

I agree there is no way to insure the necessary strength with out cores.

Cores and core boxes add greatly to the cost of the castings.

You also have to accommodate different motor mount widths. A turbo
installation
means wider motor mounts. Actually wider motor mounts are desirable for
everything
with the possible exception of the RV3 RV4 and Long EZ.

You could offer bolt on castings. A wide set and a narrow set.

Paul Lamar

*****************************************************************************
Guys;

You're not going to get any argument from me here to the contrary.....Nicely
engineered lighter mm castings is the right and only ticket, especially now
that there's no left right differences, (One mm casting fits both pads).
Narrow for tandems and Wider for side x sides styles. This would certainly
put the icing on this cake, boy what a wedding, a match made in heaven :)

                                                   Butch

 
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