I just thought of a way to save time,
weight and money on the throttle body Michael.

We will just cut down one of our existing two rotor
slide throttle kits.  Tubes are already TIG welded
to covers. Due to a fortuitous set of circumstance the
piping is the right size.

Makes the the Cessna type throttle cable short and direct.

It is also another improvement in the boost to back pressure
ratio which lowers the fuel burn slightly for a given amount
of cruise HP.

Butterfly throttle bodies have an associated pressure drop
across them even when wide open.

Paul Lamar