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I tore into the 1926 / 1932 Elto Super A /Rudder Twin today.
If this contraption ever ran or powered a boat, it was a long
time ago.
Some of the mods to make the Super A power head fit on
the G Rudder Twin lower appear to be
the bottom of the Super A exhaust chamber / muffler to
allow the Rudder Twin lower to mount.

No sure what the Super A water outlets originally looked
like exiting the muffler, but appears some mods were made here.

It appears a plate was welded to the transom mount to adapt
the powerhead to the L.U.

Were the big brass terminal connectors
original to these coils?
Does the military style coil (for twins) work okay for a retrofit
in these coil housings?

Prepare to be boarded!