Could the left side of the throttle body be shortened by an inch. Rather
   than a full circle cut out in the throttle plate on the left intake tube
   only a half circle is required.  Once the position of the throttle plate
   moves half way the remainder of the circle does nothing in uncovering or
   blocking the intake.  Therefore the closed throttle plate position only
   requires 1" to the left of the left intake tube.  Rather than 3.696"
   from center of left intake tube it could be reduced to 2.6xx".
   Likewise, if you are sealing the clevis area it could be preferable to
   shorten the right hand side also by moving the clevis closer to the
   right intake tube.  Is 1 1/2" flat plate from the edge of the intake
   tube to the cut out for the clevis needed?   M2c

   Terry Adams
   Thorp T18C
   Stockton

Paul & Terry
Don't do this unless you have serious space issues. What happens is
that one half of the left hole would be unfaired at WOT. Believe me that
WILL cause an imbalance between the two rotors. There would be a bunch
of turbulence caused by the pocket left open between the plates. High
performance carburator makers have been working on ways to smooth that
area for years. You would be giving away one of the advantages of the
slide throttle.
Bill Jepson

I agree Bill.

Paul Lamar