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Old 03-18-2018, 09:02 PM
Jim Vander Wal Jim Vander Wal is offline
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Join Date: Sep 2002
Location: Grand Rapids, MI
Cobra Make, Engine: FFR Challenge Car, RDI aluminum 427w
Posts: 345
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Not sure about original cars but...
Superformance MkIIIs are about 8 degrees
Factory Five MkIVs are about 18 degrees
Even at 8 degrees off vertical the sun can reflect back when behind and low.
I like the IP closer to vertical.
Jim
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