LT1 plenum update

[Dave Williams]

-> Have you seen the inside of the Cobra R intake and plenum?  Looks
-> like 8 velocity stacks in there.

 I just happen to have one of those on the shelf.  The problem is the
lower manifold, which approximates "a maze of twisty little passages."
The serpentine kink to #5 cylinder is particularly awful since the
intake port slants the opposite direction from the runner's approach.

 The Ford 3.8 V6 port-injection intakes are quite nice.  Too bad about
those weird doglegs in the center intake ports...
                                                                                
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