engine assembly question

[Carlson Bryan J <bjc159s@nic.smsu.edu>]

Kind of an urgent situation.  As some of you know, I have had the engine
out of my 73 sq for quite some time.  Following the drama of a bad align
bore, incorrectly sized cam bearings (within the same package!), and other
hassles, I am at a point of great excitement.  I have the case together,
the pistons, cylinders, and heads on, and have installed the flywheel and
clutch and pressure plate.  Now, here's my question.  Being as how I
purchased my square with a blown engine, and partially disassembled at
that, I have run into a problem with the sheet metal.  I am either short a
piece, or have an extra.  The piece I have is one that fits over the
cylinders on the right side, but would require the removal and
reinstallation of the cylinder bank on the left side to get under the oil
cooler bracket.  This piece is about 8 inches long front to back, 4 inches
side to side, and kind of looks like a streched out "C" if viewed from the
side.  It also has two square holes about an inch and a half across.  I
have seen these pieces mounted on the bottom of the cylinders of a sand
rail engine, and am wondering if they are an offroad part that somehow
found it's way to my car.  These pieces are not mentioned in the Idiot's
Manual or in Tom Wilson's book either, nor are they pictured.  They also
will not fit under the cylinders because of the smaller air deflectors.
Someone please help!
Sorry this post is so long, but those suckers are hard to describe.  Ooh,
one more thing, I have also seen them for sale in the off road section of
my local VeeDub store.
Thanks for your time,
Bryan