There's been some talk about a Walker/NAPA crossover with three part
numbers, #21699, #21696, #21536.
These did match the OEM exactly, or really, really, close.
But the operative word here is "did". They have been discontinued or as
NAPA puts it "obsolete". And these are the words of both NAPA distributors
and headquarters. The car model crossovers would be the same for a 67-74
Camaro/Firebird with minor differences. But be careful, some books show the
replacement as a dual in/single out configuration.
Ravin, another manufacturer is looking into this and are "considering" a
interior reconfigure of their Z-77 dual in/out for crossflow. But this is
down the road, if at all. This would be nice since the case of the Z-77 is
22" long, close to the OEM.
One thing to keep in mind is that you could hook up a uni-directional dual
in/out, but the much of the flow would just come out the same side without
any baffling since that would be the path of least resistance. Actually, as
the flow would be a mess, efficiency would be lost.
stephan #2821
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